/* ==========================================================================
   Minmetals East — Corporate Website Design System
   Henan Minmetals East Energy Co., Ltd.
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  /* Brand palette */
  --navy-900: #04101f;
  --navy-800: #071a38;
  --navy-700: #0c2a55;
  --navy-600: #123a70;
  --blue-700: #0f52b5;
  --blue-600: #1560c8;
  --blue-500: #1b6fe0;
  --blue-400: #3b90f0;
  --cyan-400: #38bdf8;
  --cyan-300: #7dd3fc;
  --red-500: #e1251b;
  --red-600: #c81f16;

  /* Neutrals */
  --ink-900: #0b1728;
  --ink-800: #16233a;
  --ink-700: #2b3a4f;
  --ink-600: #43536b;
  --ink-500: #5d6b80;
  --ink-400: #7c8899;
  --ink-300: #a6b0be;
  --line: #e3e8ef;
  --line-soft: #eef1f6;
  --bg: #f6f8fb;
  --bg-alt: #eef2f8;
  --white: #ffffff;

  /* Surfaces */
  --surface-dark: var(--navy-800);
  --surface-darker: var(--navy-900);

  /* Typography */
  --font-display: "Archivo", "Helvetica Neue", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  /* Layout */
  --container: 1280px;
  --container-narrow: 940px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Elevation */
  --shadow-xs: 0 1px 2px rgba(11, 23, 40, .06);
  --shadow-sm: 0 2px 8px rgba(11, 23, 40, .06);
  --shadow: 0 12px 32px -12px rgba(11, 23, 40, .18);
  --shadow-lg: 0 28px 64px -24px rgba(11, 23, 40, .28);
  --shadow-dark: 0 30px 70px -30px rgba(0, 0, 0, .7);

  /* Motion */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --dur: .5s;

  --header-h: 84px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; font-family: var(--font-display); color: var(--ink-900); font-weight: 700; line-height: 1.15; letter-spacing: -.02em; }
p { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }
strong { color: var(--ink-900); font-weight: 600; }
hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

::selection { background: var(--blue-500); color: #fff; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--navy-800); color: #fff; padding: 12px 20px; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

/* ---------- 3. Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: var(--container-narrow); }
.container--wide { max-width: 1480px; }

.section { padding-block: clamp(72px, 8.5vw, 132px); position: relative; }
.section--tight { padding-block: clamp(56px, 6vw, 90px); }
.section--flush-top { padding-top: 0; }
.section--bg { background: var(--bg); }
.section--line { border-top: 1px solid var(--line); }

.section--dark {
  background: var(--surface-dark);
  color: rgba(255, 255, 255, .78);
}
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }
.section--dark strong { color: #fff; }

.section-head { max-width: 780px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--wide { max-width: 960px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 12px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase;
  color: var(--blue-600); margin-bottom: 20px;
}
.eyebrow::before {
  content: ""; width: 28px; height: 2px; background: linear-gradient(90deg, var(--red-500), var(--blue-500));
  flex: none;
}
.section--dark .eyebrow { color: var(--cyan-300); }
.section-head--center .eyebrow::before { display: none; }

.h-section { font-size: clamp(28px, 3.3vw, 44px); line-height: 1.14; margin-bottom: 22px; }
.h-section .accent { color: var(--blue-500); }
.section--dark .h-section .accent { color: var(--cyan-400); }

.lead {
  font-size: clamp(16px, 1.35vw, 18.5px);
  line-height: 1.72;
  color: var(--ink-500);
}
.section--dark .lead { color: rgba(255, 255, 255, .7); }

.h-sub { font-size: clamp(19px, 1.7vw, 23px); line-height: 1.3; margin-bottom: 12px; }
.text-muted { color: var(--ink-500); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }

/* Section index marker (01 / 02 …) */
.section-index {
  position: absolute; top: clamp(60px, 7vw, 104px); right: var(--gutter);
  font-family: var(--font-display); font-size: clamp(64px, 8vw, 128px);
  font-weight: 800; line-height: 1; color: transparent;
  -webkit-text-stroke: 1px var(--line); pointer-events: none; user-select: none;
}
.section--dark .section-index { -webkit-text-stroke-color: rgba(255, 255, 255, .1); }

/* ---------- 4. Buttons ---------- */
.btn {
  --btn-bg: var(--navy-800);
  --btn-fg: #fff;
  --btn-border: var(--navy-800);
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-display); font-size: 14px; font-weight: 600; letter-spacing: .04em;
  color: var(--btn-fg); background: var(--btn-bg);
  border: 1px solid var(--btn-border); border-radius: var(--radius-sm);
  cursor: pointer; position: relative; overflow: hidden;
  transition: transform .35s var(--ease), background-color .35s var(--ease), border-color .35s var(--ease), color .35s var(--ease), box-shadow .35s var(--ease);
  white-space: nowrap;
}
.btn::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, var(--blue-600), var(--cyan-400));
  transform: translateX(-101%); transition: transform .45s var(--ease); z-index: -1;
}
.btn > * { position: relative; z-index: 1; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn:hover::after { transform: translateX(0); }
.btn:active { transform: translateY(0); }

.btn--primary { --btn-bg: var(--blue-600); --btn-border: var(--blue-600); }
.btn--red { --btn-bg: var(--red-500); --btn-border: var(--red-500); }
.btn--light { --btn-bg: #fff; --btn-fg: var(--navy-800); --btn-border: #fff; }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--ink-900); --btn-border: var(--line); }
.btn--ghost-light { --btn-bg: transparent; --btn-fg: #fff; --btn-border: rgba(255, 255, 255, .32); }
.btn--ghost-light:hover { --btn-fg: var(--navy-800); }
.btn--lg { padding: 18px 38px; font-size: 15px; }
.btn--sm { padding: 11px 20px; font-size: 13px; }
.btn--block { width: 100%; }

.btn .ico { width: 16px; height: 16px; flex: none; transition: transform .35s var(--ease); }
.btn:hover .ico { transform: translateX(4px); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: 14px; font-weight: 600; letter-spacing: .04em;
  color: var(--blue-600);
}
.link-arrow::after {
  content: ""; width: 30px; height: 1px; background: currentColor;
  transition: width .35s var(--ease);
}
.link-arrow:hover::after { width: 46px; }
.section--dark .link-arrow { color: var(--cyan-400); }

/* ---------- 5. Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: transform .4s var(--ease);
}
.site-header.is-hidden { transform: translateY(-100%); }

.topbar {
  background: var(--navy-900); color: rgba(255, 255, 255, .62);
  font-size: 12.5px; letter-spacing: .02em;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.topbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 38px; }
.topbar__group { display: flex; align-items: center; gap: 22px; }
.topbar__item { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.topbar__item svg { width: 13px; height: 13px; opacity: .7; }
.topbar a:hover { color: #fff; }

.lang-switch { display: inline-flex; align-items: center; gap: 2px; }
.lang-switch a {
  padding: 3px 9px; border-radius: 3px; font-size: 11.5px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; color: rgba(255, 255, 255, .5);
  transition: color .25s var(--ease), background .25s var(--ease);
}
.lang-switch a:hover { color: #fff; }
.lang-switch a.is-active { color: #fff; background: rgba(255, 255, 255, .12); }

.header-main {
  height: var(--header-h);
  display: flex; align-items: center; gap: 28px;
  background: var(--white);
  transition: background-color .4s var(--ease), box-shadow .4s var(--ease), height .4s var(--ease);
}
.site-header--overlay .header-main { background: transparent; }
.site-header--overlay .header-main.is-solid {
  background: var(--white);
  box-shadow: 0 1px 0 var(--line), 0 10px 30px -22px rgba(11, 23, 40, .35);
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand__mark { width: 38px; height: 38px; flex: none; transition: opacity .3s var(--ease); }
.brand__logo { height: 26px; width: auto; transition: opacity .3s var(--ease); }
.brand__logo--dark { display: block; }
.brand__logo--light { display: none; }
.site-header--overlay .header-main:not(.is-solid) .brand__logo--dark { display: none; }
.site-header--overlay .header-main:not(.is-solid) .brand__logo--light { display: block; }

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative; display: block; padding: 10px 14px; white-space: nowrap;
  font-family: var(--font-display); font-size: 14.5px; font-weight: 600; letter-spacing: .01em;
  color: var(--ink-800); transition: color .25s var(--ease);
}
.nav__link::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px;
  background: var(--blue-500); transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav__link:hover { color: var(--blue-600); }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--blue-600); }

.site-header--overlay .header-main:not(.is-solid) .nav__link { color: rgba(255, 255, 255, .9); }
.site-header--overlay .header-main:not(.is-solid) .nav__link:hover,
.site-header--overlay .header-main:not(.is-solid) .nav__link.is-active { color: #fff; }

.header__actions { display: flex; align-items: center; gap: 14px; flex: none; }
.header__lang { display: none; }

.burger {
  display: none; width: 44px; height: 44px; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: var(--radius-sm); color: var(--ink-800);
}
.site-header--overlay .header-main:not(.is-solid) .burger {
  color: #fff; border-color: rgba(255, 255, 255, .34);
}
.burger span { display: block; width: 19px; height: 1.5px; background: currentColor; position: relative; transition: background .2s; }
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 19px; height: 1.5px; background: currentColor;
  transition: transform .3s var(--ease);
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
body.nav-open .burger span { background: transparent; }
body.nav-open .burger span::before { transform: translateY(6px) rotate(45deg); }
body.nav-open .burger span::after { transform: translateY(-6px) rotate(-45deg); }

/* Mobile drawer */
.drawer {
  position: fixed; inset: 0; z-index: 99;
  background: var(--navy-900);
  padding: calc(var(--header-h) + 40px) var(--gutter) 40px;
  transform: translateX(100%); transition: transform .45s var(--ease);
  overflow-y: auto;
}
body.nav-open .drawer { transform: translateX(0); }
.drawer__nav a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0; border-bottom: 1px solid rgba(255, 255, 255, .1);
  font-family: var(--font-display); font-size: 22px; font-weight: 700; color: #fff;
}
.drawer__nav a::after { content: "→"; color: var(--cyan-400); font-size: 18px; }
.drawer__foot { margin-top: 40px; display: grid; gap: 14px; }
.drawer__foot a { color: rgba(255, 255, 255, .7); font-size: 15px; }
.drawer__lang { display: flex; gap: 10px; margin-top: 28px; }
.drawer__lang a {
  padding: 10px 20px; border: 1px solid rgba(255, 255, 255, .25); border-radius: var(--radius-sm);
  color: #fff; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
}
.drawer__lang a.is-active { background: #fff; color: var(--navy-900); border-color: #fff; }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative; isolation: isolate;
  min-height: min(88vh, 860px);
  display: flex; align-items: flex-end;
  padding-top: calc(var(--header-h) + 90px);
  padding-bottom: 0;
  background: var(--navy-900);
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; z-index: -2; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__media::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(100deg, rgba(4, 16, 31, .95) 0%, rgba(4, 16, 31, .86) 38%, rgba(4, 16, 31, .48) 68%, rgba(4, 16, 31, .62) 100%),
    linear-gradient(0deg, rgba(4, 16, 31, .95) 0%, rgba(4, 16, 31, 0) 42%);
}
.hero__grid {
  position: absolute; inset: 0; z-index: -1; opacity: .5;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse 80% 60% at 20% 40%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 20% 40%, #000 0%, transparent 75%);
}
.hero__glow {
  position: absolute; z-index: -1; width: 720px; height: 720px; right: -140px; top: -160px;
  background: radial-gradient(circle, rgba(56, 189, 248, .3) 0%, rgba(21, 96, 200, .12) 42%, transparent 70%);
  filter: blur(12px);
}
.hero__inner { position: relative; width: 100%; }
.hero__content { max-width: 780px; padding-bottom: clamp(56px, 7vw, 96px); }
.hero__badge {
  display: inline-flex; align-items: center; gap: 9px; margin-bottom: 26px;
  padding: 7px 15px 7px 9px; border-radius: 100px;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16);
  font-size: 12px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: rgba(255, 255, 255, .86);
  backdrop-filter: blur(8px);
}
.hero__badge i {
  width: 18px; height: 18px; border-radius: 50%; background: var(--red-500);
  display: inline-flex; align-items: center; justify-content: center;
}
.hero__badge i::after { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #fff; }
.hero__eyebrow {
  font-size: 13px; font-weight: 600; letter-spacing: .22em; text-transform: uppercase;
  color: var(--cyan-400); margin-bottom: 22px;
}
.hero__title {
  font-size: clamp(36px, 5vw, 68px); line-height: 1.06; color: #fff; margin-bottom: 26px;
  letter-spacing: -.028em; font-weight: 800;
}
.hero__title em { font-style: normal; color: var(--cyan-400); }
.hero__lead {
  font-size: clamp(16px, 1.45vw, 19px); line-height: 1.72; color: rgba(255, 255, 255, .76);
  max-width: 640px; margin-bottom: 38px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero__scroll {
  position: absolute; left: var(--gutter); bottom: 26px; z-index: 2;
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 11.5px; letter-spacing: .18em; text-transform: uppercase; color: rgba(255, 255, 255, .55);
}
.hero__scroll i { display: block; width: 1px; height: 46px; background: linear-gradient(180deg, var(--cyan-400), transparent); position: relative; overflow: hidden; }
.hero__scroll i::after {
  content: ""; position: absolute; top: -46px; left: 0; width: 1px; height: 46px; background: var(--cyan-400);
  animation: scrollLine 2.2s var(--ease) infinite;
}
@keyframes scrollLine { 0% { top: -46px; } 100% { top: 46px; } }

/* Hero stat bar */
.statbar {
  position: relative; z-index: 3;
  background: rgba(7, 26, 56, .88);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(255, 255, 255, .1);
}
.statbar__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat {
  padding: 30px 26px 34px; position: relative;
  border-right: 1px solid rgba(255, 255, 255, .08);
}
.stat:last-child { border-right: 0; }
.stat__value {
  font-family: var(--font-display); font-size: clamp(30px, 3.4vw, 46px); font-weight: 800;
  color: #fff; line-height: 1; letter-spacing: -.03em; display: flex; align-items: baseline; gap: 7px;
}
.stat__value em { font-style: normal; font-size: .44em; color: var(--cyan-400); font-weight: 700; letter-spacing: 0; }
.stat__label { margin-top: 12px; font-size: 13.5px; color: rgba(255, 255, 255, .6); line-height: 1.5; }
.stat::before {
  content: ""; position: absolute; left: 26px; top: 0; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--cyan-400), transparent); transition: width .6s var(--ease);
}
.stat:hover::before { width: 70%; }

/* ---------- 7. Cards & grids ---------- */
.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--auto-sm { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; position: relative; overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.card__num {
  font-family: var(--font-display); font-size: 13px; font-weight: 700; letter-spacing: .12em;
  color: var(--blue-500); margin-bottom: 16px; display: block;
}
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { font-size: 15px; color: var(--ink-500); }
.card--dark { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .1); color: rgba(255, 255, 255, .72); }
.card--dark:hover { background: rgba(255, 255, 255, .07); border-color: rgba(255, 255, 255, .18); box-shadow: var(--shadow-dark); }
.card--dark h3 { color: #fff; }
.card--dark p { color: rgba(255, 255, 255, .62); }

/* Image card */
.imgcard {
  position: relative; display: block; overflow: hidden; border-radius: var(--radius);
  background: var(--navy-800); isolation: isolate;
}
.imgcard img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease-out); }
.imgcard:hover img { transform: scale(1.06); }
.imgcard__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(4, 16, 31, .92) 0%, rgba(4, 16, 31, .3) 55%, rgba(4, 16, 31, 0) 100%);
}
.imgcard__body { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 24px; }
.imgcard__title { color: #fff; font-size: 19px; margin-bottom: 6px; }
.imgcard__text { color: rgba(255, 255, 255, .74); font-size: 14px; line-height: 1.6; }
.imgcard__tag {
  position: absolute; top: 18px; left: 18px; z-index: 2;
  padding: 6px 12px; border-radius: 100px; background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .2); backdrop-filter: blur(6px);
  font-size: 11.5px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: #fff;
}

/* Split feature */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 5vw, 78px); align-items: center; }
.split--reverse .split__media { order: 2; }
.split__media { position: relative; border-radius: var(--radius-lg); overflow: hidden; }
.split__media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }
.split__media--tall img { aspect-ratio: 3 / 4; }
.split__accent {
  position: absolute; inset: auto -26px -26px auto; width: 62%; height: 62%; z-index: -1;
  background: linear-gradient(135deg, var(--blue-500), var(--cyan-400)); opacity: .18; border-radius: var(--radius-lg);
}
.split__body h2 { font-size: clamp(26px, 2.9vw, 40px); margin-bottom: 20px; line-height: 1.16; }
.split__body p { color: var(--ink-500); font-size: 16px; }

.checklist { margin-top: 26px; display: grid; gap: 12px; }
.checklist li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; color: var(--ink-600); }
.checklist li::before {
  content: ""; flex: none; width: 18px; height: 18px; margin-top: 4px; border-radius: 50%;
  background: var(--blue-500) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/11px no-repeat;
}

/* Feature list rows */
.featlist { display: grid; gap: 0; border-top: 1px solid var(--line); }
.featlist__item {
  display: grid; grid-template-columns: 64px 1fr; gap: 24px; align-items: start;
  padding: 26px 0; border-bottom: 1px solid var(--line);
  transition: background .35s var(--ease);
}
.featlist__item:hover { background: linear-gradient(90deg, rgba(27, 111, 224, .04), transparent); }
.featlist__num {
  font-family: var(--font-display); font-size: 15px; font-weight: 800; color: var(--blue-500);
  letter-spacing: .06em; padding-top: 3px;
}
.featlist__title { font-size: 19px; margin-bottom: 8px; }
.featlist__text { font-size: 15px; color: var(--ink-500); }
.featlist__media { margin-top: 16px; border-radius: var(--radius); overflow: hidden; }
.featlist__media img { width: 100%; aspect-ratio: 16 / 7; object-fit: cover; }

/* ---------- 8. Product category cards ---------- */
.cats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.cat {
  position: relative; min-height: 430px; border-radius: var(--radius-lg); overflow: hidden;
  display: flex; align-items: flex-end; isolation: isolate; background: var(--navy-800);
}
.cat img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform 1s var(--ease-out); }
.cat:hover img { transform: scale(1.05); }
.cat::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(0deg, rgba(4, 16, 31, .96) 6%, rgba(4, 16, 31, .55) 52%, rgba(4, 16, 31, .25) 100%);
}
.cat__body { padding: 40px; width: 100%; }
.cat__model { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--cyan-400); margin-bottom: 14px; }
.cat__title { color: #fff; font-size: clamp(26px, 2.6vw, 34px); margin-bottom: 14px; }
.cat__text { color: rgba(255, 255, 255, .74); font-size: 15px; margin-bottom: 24px; max-width: 460px; }
.cat__cta { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-family: var(--font-display); font-weight: 600; font-size: 14px; letter-spacing: .04em; }
.cat__cta::after { content: ""; width: 26px; height: 1px; background: var(--cyan-400); transition: width .35s var(--ease); }
.cat:hover .cat__cta::after { width: 44px; }

/* ---------- 9. Tables ---------- */
.table-wrap {
  overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--white); box-shadow: var(--shadow-xs);
  -webkit-overflow-scrolling: touch;
}
table.spec { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 1020px; }
table.spec thead th {
  background: var(--navy-800); color: #fff; font-family: var(--font-display);
  font-size: 12px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase;
  padding: 15px 16px; text-align: left; white-space: nowrap; vertical-align: middle;
  position: sticky; top: 0; z-index: 2;
}
table.spec tbody td { padding: 14px 16px; border-bottom: 1px solid var(--line-soft); color: var(--ink-600); vertical-align: middle; }
table.spec tbody tr:last-child td { border-bottom: 0; }
table.spec tbody tr { transition: background .25s var(--ease); }
table.spec tbody tr:hover { background: #f4f8fe; }
table.spec td.model { font-family: var(--font-mono); font-weight: 600; color: var(--ink-900); white-space: nowrap; font-size: 13.5px; }
table.spec tr.is-hi { background: #f0f8ff; }
table.spec tr.is-hi:hover { background: #e5f2ff; }
table.spec tr.is-hi td.model { color: var(--blue-700); }
table.spec tr.is-hi td.model::after {
  content: "5.0C"; display: inline-block; margin-left: 9px; padding: 2px 7px; border-radius: 3px;
  background: var(--blue-600); color: #fff; font-size: 10px; font-weight: 700; letter-spacing: .06em; vertical-align: middle;
}
.spec-group td {
  background: var(--bg-alt); font-family: var(--font-display); font-weight: 700; font-size: 13px;
  letter-spacing: .04em; color: var(--ink-800); padding: 12px 16px !important;
}
.spec-note { margin-top: 18px; font-size: 13.5px; color: var(--ink-500); }
.spec-note strong { color: var(--ink-800); }

/* ---------- 10. Tabs ---------- */
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--line); margin-bottom: 40px; flex-wrap: wrap; }
.tab {
  position: relative; padding: 16px 26px; font-family: var(--font-display); font-size: 15px; font-weight: 600;
  color: var(--ink-500); transition: color .3s var(--ease);
}
.tab::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--blue-500);
  transform: scaleX(0); transition: transform .35s var(--ease);
}
.tab:hover { color: var(--ink-900); }
.tab.is-active { color: var(--blue-600); }
.tab.is-active::after { transform: scaleX(1); }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fadeUp .5s var(--ease) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ---------- 11. Process timeline ---------- */
.process { display: grid; gap: 4px; }
.process__item {
  display: grid; grid-template-columns: 92px 300px 1fr; gap: 28px; align-items: center;
  padding: 22px 0; border-bottom: 1px solid var(--line); position: relative;
  transition: background .4s var(--ease);
}
.process__item:first-child { border-top: 1px solid var(--line); }
.process__num {
  font-family: var(--font-display); font-size: 34px; font-weight: 800; line-height: 1;
  color: transparent; -webkit-text-stroke: 1px var(--ink-300); letter-spacing: -.03em;
  transition: color .4s var(--ease), -webkit-text-stroke-color .4s var(--ease);
}
.process__item:hover .process__num { color: var(--blue-500); -webkit-text-stroke-color: transparent; }
.process__name { font-size: 19px; font-weight: 700; font-family: var(--font-display); color: var(--ink-900); }
.process__cn { font-size: 13px; color: var(--ink-400); margin-top: 3px; }
.process__text { font-size: 15px; color: var(--ink-500); }
.process__thumb {
  width: 168px; height: 112px; border-radius: var(--radius-sm); overflow: hidden; flex: none;
  opacity: 0; transform: translateX(-14px); transition: opacity .45s var(--ease), transform .45s var(--ease);
}
.process__item:hover .process__thumb { opacity: 1; transform: none; }
.process__thumb img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 12. Gallery ---------- */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; }
.gal {
  position: relative; overflow: hidden; border-radius: var(--radius-sm); aspect-ratio: 4 / 3;
  background: var(--bg-alt); cursor: zoom-in; display: block;
}
.gal img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease-out), filter .5s var(--ease); }
.gal:hover img { transform: scale(1.07); filter: brightness(.72); }
.gal__cap {
  position: absolute; inset: auto 0 0 0; padding: 30px 16px 14px;
  background: linear-gradient(0deg, rgba(4, 16, 31, .9), transparent);
  color: #fff; font-size: 13px; font-weight: 500; text-align: left;
  opacity: 0; transform: translateY(10px); transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.gal:hover .gal__cap { opacity: 1; transform: none; }
.gal--cert { aspect-ratio: 3 / 4; background: var(--white); border: 1px solid var(--line); }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200; display: none;
  align-items: center; justify-content: center; padding: 40px;
  background: rgba(4, 16, 31, .94); backdrop-filter: blur(6px);
}
.lightbox.is-open { display: flex; animation: fadeIn .3s var(--ease); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.lightbox img { max-width: 100%; max-height: 84vh; object-fit: contain; border-radius: var(--radius-sm); }
.lightbox__cap { color: rgba(255, 255, 255, .75); text-align: center; margin-top: 18px; font-size: 14px; }
.lightbox__close {
  position: absolute; top: 24px; right: 24px; width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .3); color: #fff; display: flex; align-items: center; justify-content: center;
  transition: background .25s, transform .25s;
}
.lightbox__close:hover { background: rgba(255, 255, 255, .12); transform: rotate(90deg); }

/* ---------- 13. Certificates ---------- */
.certs { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 18px; }
.cert {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; display: flex; flex-direction: column; gap: 10px; position: relative;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.cert:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.cert__code {
  font-family: var(--font-display); font-size: 20px; font-weight: 800; color: var(--navy-800);
  letter-spacing: -.01em;
}
.cert__name { font-family: var(--font-display); font-weight: 600; font-size: 15px; color: var(--ink-800); }
.cert__desc { font-size: 13.5px; color: var(--ink-500); line-height: 1.6; flex: 1; }
.cert__dl {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 6px;
  font-size: 13px; font-weight: 600; color: var(--blue-600); letter-spacing: .03em;
}
.cert__dl svg { width: 15px; height: 15px; }
.cert--dark { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .1); }
.cert--dark .cert__code { color: #fff; }
.cert--dark .cert__name { color: rgba(255, 255, 255, .86); }
.cert--dark .cert__desc { color: rgba(255, 255, 255, .58); }
.cert--dark:hover { background: rgba(255, 255, 255, .07); }

/* Cert badge strip */
.badges { display: flex; flex-wrap: wrap; gap: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 12px 20px;
  border: 1px solid rgba(255, 255, 255, .16); border-radius: var(--radius-sm);
  font-family: var(--font-display); font-weight: 700; font-size: 14px; letter-spacing: .04em;
  color: #fff; background: rgba(255, 255, 255, .04); transition: background .3s, border-color .3s, transform .3s var(--ease);
}
.badge:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .3); transform: translateY(-2px); }
.badge i { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan-400); }

/* ---------- 14. Timeline / milestones ---------- */
.timeline { position: relative; display: grid; gap: 0; }
.timeline::before {
  content: ""; position: absolute; left: 118px; top: 8px; bottom: 8px; width: 1px;
  background: linear-gradient(180deg, var(--blue-500), rgba(27, 111, 224, .06));
}
.milestone { display: grid; grid-template-columns: 118px 1fr; gap: 40px; padding: 26px 0; position: relative; }
.milestone__phase {
  font-family: var(--font-display); font-size: 12px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--blue-600); text-align: right; padding-top: 5px;
}
.milestone__body { position: relative; padding-left: 8px; }
.milestone__body::before {
  content: ""; position: absolute; left: -44px; top: 9px; width: 11px; height: 11px; border-radius: 50%;
  background: var(--white); border: 2px solid var(--blue-500); transition: background .3s, transform .3s var(--ease);
}
.milestone:hover .milestone__body::before { background: var(--blue-500); transform: scale(1.25); }
.milestone__title { font-size: 21px; margin-bottom: 8px; }
.milestone__text { font-size: 15px; color: var(--ink-500); max-width: 720px; }

/* ---------- 15. Culture / values ---------- */
.values { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.value { background: var(--white); padding: 34px 32px; transition: background .35s var(--ease); }
.value:hover { background: #f4f8fe; }
.value__label {
  font-size: 11.5px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase;
  color: var(--red-500); margin-bottom: 14px;
}
.value__title { font-size: 20px; margin-bottom: 10px; line-height: 1.32; }
.value__text { font-size: 14.5px; color: var(--ink-500); }

.culture-sun {
  display: flex; align-items: center; gap: 24px; padding: 26px 30px;
  border-left: 3px solid var(--red-500); background: var(--bg); border-radius: 0 var(--radius) var(--radius) 0;
}
.culture-sun__mark {
  width: 52px; height: 52px; flex: none; border-radius: 50%;
  background: radial-gradient(circle at 34% 32%, #ffd66b, #f59e0b 62%, #d97706);
  box-shadow: 0 0 0 8px rgba(245, 158, 11, .14);
}
.culture-sun__cn { font-family: var(--font-display); font-size: 22px; font-weight: 700; color: var(--ink-900); letter-spacing: .08em; }
.culture-sun__en { font-size: 14px; color: var(--ink-500); }

/* ---------- 16. Number strip ---------- */
.numbers { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--radius); overflow: hidden; }
.number { background: rgba(255, 255, 255, .03); padding: 28px 20px; text-align: center; transition: background .35s; }
.number:hover { background: rgba(255, 255, 255, .07); }
.number__value { font-family: var(--font-display); font-size: clamp(22px, 2.3vw, 32px); font-weight: 800; color: #fff; line-height: 1.1; letter-spacing: -.02em; }
.number__label { font-size: 12.5px; color: rgba(255, 255, 255, .55); margin-top: 8px; line-height: 1.45; }

/* ---------- 17. Pages: inner hero ---------- */
.page-hero {
  position: relative; isolation: isolate; padding-top: calc(var(--header-h) + clamp(70px, 8vw, 120px));
  padding-bottom: clamp(56px, 6vw, 90px); background: var(--navy-800); overflow: hidden;
}
.page-hero__media { position: absolute; inset: 0; z-index: -2; }
.page-hero__media img { width: 100%; height: 100%; object-fit: cover; }
.page-hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(100deg, rgba(4, 16, 31, .96) 0%, rgba(4, 16, 31, .84) 42%, rgba(4, 16, 31, .55) 100%);
}
.page-hero__eyebrow {
  font-size: 12.5px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase;
  color: var(--cyan-400); margin-bottom: 18px;
}
.page-hero__title { font-size: clamp(30px, 4.2vw, 54px); line-height: 1.08; color: #fff; max-width: 900px; margin-bottom: 22px; letter-spacing: -.028em; }
.page-hero__lead { font-size: clamp(15.5px, 1.35vw, 18px); color: rgba(255, 255, 255, .74); max-width: 720px; line-height: 1.7; }
.page-hero__aside { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }

/* Sub navigation */
.subnav {
  position: sticky; top: var(--header-h); z-index: 60;
  background: rgba(255, 255, 255, .94); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.subnav__inner { display: flex; align-items: center; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.subnav__inner::-webkit-scrollbar { display: none; }
.subnav a {
  padding: 17px 16px; font-family: var(--font-display); font-size: 13.5px; font-weight: 600;
  color: var(--ink-500); white-space: nowrap; border-bottom: 2px solid transparent;
  transition: color .25s, border-color .25s;
}
.subnav a:hover { color: var(--ink-900); }
.subnav a.is-active { color: var(--blue-600); border-bottom-color: var(--blue-500); }

/* 主表头收起时，子导航顶到最上方，避免留白与遮挡 */
body:has(.site-header.is-hidden) .subnav { top: 0; }
body:has(.subnav) { scroll-padding-top: calc(var(--header-h) + 78px); }

/* ---------- 18. News ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.news-card__bar { height: 4px; background: linear-gradient(90deg, var(--blue-600), var(--cyan-400)); }
.news-card__body { padding: 28px 28px 30px; flex: 1; display: flex; flex-direction: column; }
.news-card__meta { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; font-size: 12px; letter-spacing: .06em; }
.news-card__cat {
  padding: 5px 11px; border-radius: 100px; background: rgba(27, 111, 224, .09); color: var(--blue-700);
  font-weight: 700; text-transform: uppercase; font-size: 11px; letter-spacing: .1em;
}
.news-card__date { color: var(--ink-400); }
.news-card__title { font-size: 20px; line-height: 1.32; margin-bottom: 12px; }
.news-card__excerpt { font-size: 14.5px; color: var(--ink-500); margin-bottom: 22px; }
.news-card__link { margin-top: auto; }

.news-article { max-width: 780px; margin-inline: auto; }
.news-article__meta { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; font-size: 13px; color: var(--ink-400); }
.news-article__title { font-size: clamp(26px, 3vw, 38px); line-height: 1.18; margin-bottom: 18px; }
.news-article__lead { font-size: 17.5px; color: var(--ink-600); line-height: 1.7; padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 30px; }
.news-article p { font-size: 16px; line-height: 1.85; color: var(--ink-600); margin-bottom: 1.3em; }
.news-article p:first-of-type::first-letter {
  float: left; font-family: var(--font-display); font-size: 3.4em; line-height: .82; font-weight: 800;
  padding: 6px 12px 0 0; color: var(--navy-800);
}

/* ---------- 19. Forms ---------- */
.form { display: grid; gap: 20px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink-700); letter-spacing: .02em; }
.field label i { color: var(--red-500); font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 14px 16px; font: inherit; font-size: 15px; color: var(--ink-900);
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.field textarea { min-height: 148px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(27, 111, 224, .12);
}
.field .err { font-size: 12.5px; color: var(--red-500); display: none; }
.field.has-error input, .field.has-error textarea { border-color: var(--red-500); }
.field.has-error .err { display: block; }
.form__note { font-size: 12.5px; color: var(--ink-400); line-height: 1.6; }
.form__ok {
  display: none; align-items: center; gap: 12px; padding: 16px 20px; border-radius: var(--radius-sm);
  background: rgba(27, 111, 224, .08); border: 1px solid rgba(27, 111, 224, .25); color: var(--blue-700); font-size: 14.5px;
}
.form__ok.is-visible { display: flex; }

/* ---------- 19b. Accordion ---------- */
.acc__body { max-height: 0; overflow: hidden; transition: max-height .55s var(--ease); }
.acc__head { cursor: pointer; }
.acc__head:focus-visible { outline: 2px solid var(--blue-500); outline-offset: 4px; }
.acc__mark { transition: transform .35s var(--ease); }
.acc.is-open .acc__mark { transform: rotate(45deg); }
.acc.is-open .link-arrow::after { width: 46px; }

.news-list { display: grid; gap: 20px; }
.news-card .acc__body { border-top: 1px solid var(--line-soft); }
.news-card .news-article { padding: 30px 28px 36px; }
.news-card .news-article h2 { margin-bottom: 4px; }

/* ---------- 20. CTA band ---------- */
.cta-band {
  position: relative; isolation: isolate; overflow: hidden;
  background: linear-gradient(120deg, var(--navy-900) 0%, var(--navy-700) 58%, #17457f 100%);
  color: #fff;
}
.cta-band::before {
  content: ""; position: absolute; z-index: -1; width: 620px; height: 620px; right: -160px; top: -180px;
  background: radial-gradient(circle, rgba(56, 189, 248, .3), transparent 65%);
}
.cta-band__inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-band__title { font-size: clamp(26px, 3vw, 38px); color: #fff; margin-bottom: 12px; }
.cta-band__text { color: rgba(255, 255, 255, .72); max-width: 620px; font-size: 16px; }

/* ---------- 21. Footer ---------- */
.site-footer { background: var(--navy-900); color: rgba(255, 255, 255, .6); }
.footer__top { padding-block: clamp(56px, 6vw, 86px); }
.footer__grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr 1.4fr; gap: 40px;
}
.footer__brand .brand__logo--light { display: block; margin-bottom: 22px; }
.footer__brand p { font-size: 14px; line-height: 1.75; max-width: 340px; }
.footer__title {
  font-family: var(--font-display); font-size: 13px; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: #fff; margin-bottom: 22px;
}
.footer__links { display: grid; gap: 11px; }
.footer__links a { font-size: 14px; transition: color .25s, padding-left .25s; display: inline-block; }
.footer__links a:hover { color: #fff; padding-left: 5px; }
.footer__contact { display: grid; gap: 16px; }
.footer__contact li { display: flex; gap: 12px; font-size: 14px; line-height: 1.6; }
.footer__contact svg { width: 16px; height: 16px; flex: none; margin-top: 4px; color: var(--cyan-400); }
.footer__contact a:hover { color: #fff; }
.footer__newsletter p { font-size: 13.5px; margin-bottom: 14px; }
.newsletter-form { display: flex; gap: 8px; }
.newsletter-form input {
  flex: 1; min-width: 0; padding: 12px 14px; font: inherit; font-size: 14px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius-sm); color: #fff;
}
.newsletter-form input::placeholder { color: rgba(255, 255, 255, .38); }
.newsletter-form input:focus { outline: none; border-color: var(--cyan-400); background: rgba(255, 255, 255, .1); }
.newsletter-form button {
  flex: none; padding: 12px 20px; border-radius: var(--radius-sm); background: var(--cyan-400);
  color: var(--navy-900); font-family: var(--font-display); font-weight: 700; font-size: 13px; letter-spacing: .04em;
  transition: background .25s;
}
.newsletter-form button:hover { background: #7dd3fc; }
.footer__bar {
  border-top: 1px solid rgba(255, 255, 255, .09); padding-block: 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 13px; color: rgba(255, 255, 255, .45);
}
.footer__legal { display: flex; gap: 22px; flex-wrap: wrap; }
.footer__legal a:hover { color: #fff; }
.footer__social { display: flex; gap: 10px; }
.footer__social a {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .16);
  display: flex; align-items: center; justify-content: center; transition: background .25s, border-color .25s;
}
.footer__social a:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .34); }
.footer__social svg { width: 15px; height: 15px; }

/* ---------- 22. Utilities ---------- */
.back-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 80;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--navy-800); color: #fff; display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity .35s var(--ease), transform .35s var(--ease), background .25s;
  box-shadow: var(--shadow);
}
.back-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--blue-600); }
.back-top svg { width: 17px; height: 17px; }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; } .reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; } .reveal-d4 { transition-delay: .32s; }

.blob { border-radius: var(--radius-lg); }
.tag-pill {
  display: inline-block; padding: 5px 12px; border-radius: 100px; background: var(--bg-alt);
  font-size: 12.5px; font-weight: 600; color: var(--ink-600); letter-spacing: .02em;
}
.mono { font-family: var(--font-mono); }
.divider { height: 1px; background: var(--line); }
.pill-list { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- 23. Responsive ---------- */

/* Compact desktop header — 1201px to 1499px.
   The full-size header row (logo + 8 nav items + quotation CTA) needs roughly
   1300px, so on narrower laptops every part scales down proportionally.
   Without this the CTA runs past the right edge of the container. */
@media (min-width: 1201px) and (max-width: 1499px) {
  .header-main { gap: clamp(14px, 1.3vw, 20px); }
  .brand__logo { height: clamp(21px, 1.75vw, 24px); }
  .nav__link { padding: 10px clamp(6px, .72vw, 11px); font-size: clamp(12.8px, 1.02vw, 13.8px); }
  .header__actions .btn--sm { padding: 10px clamp(13px, 1.25vw, 18px); font-size: clamp(12.5px, .98vw, 13px); }
}
@media (min-width: 1201px) and (max-width: 1440px) {
  .header__actions .btn--sm .ico { display: none; }
}

/* Burger navigation */
@media (max-width: 1200px) {
  :root { --header-h: 72px; }
  .nav { display: none; }
  .header__lang { display: inline-flex; }
  .burger { display: inline-flex; }
  .header__actions .btn { display: none; }
  .topbar .lang-switch { display: none; }
}

@media (max-width: 1180px) {
  .footer__grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer__contact-col { grid-column: span 2; }
}

@media (max-width: 1024px) {
  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .numbers { grid-template-columns: repeat(3, 1fr); }
  .process__item { grid-template-columns: 72px 1fr; }
  .process__thumb { display: none; }
  .timeline::before { left: 92px; }
  .milestone { grid-template-columns: 92px 1fr; gap: 30px; }
}

@media (max-width: 780px) {
  .topbar__group--left { display: none; }
  .hero { min-height: auto; padding-bottom: 0; }
  .hero__content { padding-bottom: 60px; }
  .hero__scroll { display: none; }
  .statbar__grid { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid rgba(255, 255, 255, .08); }
  .stat:nth-child(2n) { border-right: 0; }
  .cats { grid-template-columns: 1fr; }
  .cat { min-height: 380px; }
  .grid--2, .grid--3, .grid--4, .news-grid { grid-template-columns: 1fr; }
  .values { grid-template-columns: 1fr; }
  .numbers { grid-template-columns: repeat(2, 1fr); }
  .form__row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 34px; }
  .footer__contact-col { grid-column: auto; }
  .cat__body { padding: 28px; }
  .section-index { display: none; }
  .cta-band__inner { flex-direction: column; align-items: flex-start; }
  .milestone { grid-template-columns: 1fr; gap: 10px; }
  .timeline::before { display: none; }
  .milestone__phase { text-align: left; }
  .milestone__body { padding-left: 22px; }
  .milestone__body::before { left: 0; }
  .news-article p:first-of-type::first-letter { font-size: 2.8em; }
}

@media (max-width: 520px) {
  .statbar__grid { grid-template-columns: 1fr; }
  .stat { border-right: 0; }
  .hero__actions .btn { width: 100%; }
  .numbers { grid-template-columns: 1fr; }
  .lightbox { padding: 16px; }
}

/* ---------- 24. Print ---------- */
@media print {
  .site-header, .back-top, .drawer, .site-footer { display: none !important; }
  body { color: #000; }
  .section { padding-block: 20px; }
}