/* ==========================================================================
   精密铸造 · 机加工 企业官网样式表
   设计基调：石墨深蓝（冷）+ 熔融橙铜（热）—— 对应"金属熔炼 → 精密成型"
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 石墨 / 深底 */
  --ink-950: #070B0F;
  --ink-900: #0C1218;
  --ink-850: #111A22;
  --ink-800: #16212B;
  --ink-700: #1E2C38;
  --ink-600: #2A3B4A;

  /* 钢青 / 中性 */
  --steel-600: #37505F;
  --steel-500: #4A6377;
  --steel-400: #6B8296;
  --steel-300: #93A7B6;
  --steel-200: #C3CFD8;

  /* 熔融橙铜 / 强调 */
  --molten-700: #A5441A;
  --molten-600: #C2521C;
  --molten-500: #E4682A;
  --molten-400: #F58A3C;
  --molten-300: #FFB067;

  /* 纸白 / 浅底 */
  --paper-50:  #FAFBFC;
  --paper-100: #F3F5F7;
  --paper-200: #E8ECF0;
  --paper-300: #D8DFE6;
  --white: #FFFFFF;

  --text-dark:   #131C24;
  --text-body:   #46586A;
  --text-muted:  #7C8D9C;
  --text-on-dark:#E6EDF3;
  --text-on-dark-dim: #9FB1C0;

  /* 字体 */
  --font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont,
               "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: "Barlow Condensed", "Oswald", "Arial Narrow", var(--font-sans);
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas,
               "Liberation Mono", monospace;

  /* 布局 */
  --container: 1240px;
  --gutter: 24px;
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 14px;
  --header-h: 78px;

  /* 动效 */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-expo: cubic-bezier(.16, 1, .3, 1);

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(12, 18, 24, .06), 0 2px 8px rgba(12, 18, 24, .05);
  --sh-md: 0 4px 12px rgba(12, 18, 24, .08), 0 12px 32px rgba(12, 18, 24, .07);
  --sh-lg: 0 12px 32px rgba(12, 18, 24, .12), 0 32px 64px rgba(12, 18, 24, .10);
  --sh-molten: 0 8px 24px rgba(228, 104, 42, .32);
}

/* ---------- 2. 基础重置 ---------- */
*, *::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-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
body.is-locked { overflow: hidden; }

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
img { max-width: 100%; height: auto; display: block; border: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--molten-500); color: #fff; }

/* 自定义滚动条 */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--paper-100); }
::-webkit-scrollbar-thumb { background: var(--steel-300); border-radius: 99px; border: 3px solid var(--paper-100); }
::-webkit-scrollbar-thumb:hover { background: var(--steel-500); }

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

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.num {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.mono {
  font-family: var(--font-mono);
  font-size: .78em;
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* 强调下划线笔触 */
.mark {
  position: relative;
  color: var(--molten-600);
  white-space: nowrap;
}
.mark::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: .06em;
  height: .28em;
  background: linear-gradient(90deg, rgba(228,104,42,.28), rgba(255,176,103,.16));
  z-index: -1;
  border-radius: 2px;
}

/* ---------- 4. 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 1000;
  background: transparent;
  pointer-events: none;
}
.scroll-progress__bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--molten-600), var(--molten-400), var(--molten-300));
  box-shadow: 0 0 12px rgba(245, 138, 60, .6);
  transition: width .1s linear;
}

/* ---------- 5. 页头导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background .4s var(--ease), box-shadow .4s var(--ease), height .4s var(--ease);
  background: linear-gradient(180deg, rgba(7,11,15,.62) 0%, rgba(7,11,15,0) 100%);
}
.site-header.is-stuck {
  height: 66px;
  background: rgba(10, 16, 22, .92);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 1px 0 rgba(255,255,255,.07), 0 8px 32px rgba(0,0,0,.34);
}
/* 内页无大图，页头默认实底 */
.site-header.is-solid {
  background: rgba(10, 16, 22, .96);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 1px 0 rgba(255,255,255,.07);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Logo */
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand__mark {
  width: 42px; height: 42px;
  flex-shrink: 0;
  position: relative;
  display: grid; place-items: center;
}
.brand__mark svg,
.brand__mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
/* logo 深蓝下半部在深色页头/页脚上偏暗，用外发光提亮而不改配色 */
.site-header .brand__mark img,
.site-footer .brand__mark img {
  filter: drop-shadow(0 0 6px rgba(0, 162, 233, .5)) drop-shadow(0 0 16px rgba(0, 162, 233, .22));
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .04em;
}
.brand__sub {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--molten-400);
  margin-top: 3px;
}

/* 主导航 */
.nav { display: flex; align-items: center; }
.nav__list { display: flex; align-items: center; gap: 2px; }
.nav__item { position: relative; }
.nav__link {
  display: flex; align-items: center; gap: 5px;
  padding: 10px 15px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(230, 237, 243, .82);
  border-radius: var(--r-sm);
  position: relative;
  white-space: nowrap;
  transition: color .25s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 15px; right: 15px; bottom: 4px;
  height: 2px;
  background: var(--molten-400);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease-expo);
}
.nav__link:hover { color: #fff; }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: #fff; font-weight: 600; }

.nav__caret {
  width: 9px; height: 9px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  opacity: .55;
  transition: transform .3s var(--ease);
}
.nav__item:hover .nav__caret { transform: rotate(-135deg) translateY(-2px); }

/* 下拉菜单 */
.nav__dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translate(-50%, 8px);
  min-width: 460px;
  padding: 12px;
  background: rgba(17, 26, 34, .97);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .3s var(--ease), transform .3s var(--ease-expo), visibility .3s;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}
.nav__item:hover .nav__dropdown,
.nav__item:focus-within .nav__dropdown {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translate(-50%, 0);
}
.nav__dropdown::before {
  content: "";
  position: absolute;
  top: -14px; left: 0; right: 0; height: 14px;
}
.dd-link {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 14px;
  border-radius: var(--r-md);
  transition: background .25s var(--ease);
}
.dd-link:hover { background: rgba(255,255,255,.06); }
.dd-link__ico {
  width: 34px; height: 34px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: linear-gradient(145deg, rgba(228,104,42,.2), rgba(228,104,42,.06));
  border: 1px solid rgba(245,138,60,.24);
  color: var(--molten-400);
}
.dd-link__ico svg { width: 18px; height: 18px; }
.dd-link__t { font-size: 14.5px; font-weight: 600; color: #EDF2F6; line-height: 1.35; }
.dd-link__d { font-size: 12.5px; color: var(--text-on-dark-dim); line-height: 1.5; margin-top: 2px; }

.header-cta { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.header-phone {
  display: flex; flex-direction: column; align-items: flex-end; line-height: 1.2;
}
.header-phone__label {
  font-family: var(--font-mono); font-size: 9.5px;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--text-on-dark-dim);
}
.header-phone__num {
  font-family: var(--font-display);
  font-size: 20px; font-weight: 600; color: #fff; letter-spacing: .02em;
}
.header-phone:hover .header-phone__num { color: var(--molten-400); }

/* 语言切换器 */
.lang { position: relative; flex-shrink: 0; }
.lang__btn {
  display: flex; align-items: center; gap: 7px;
  height: 36px; padding: 0 12px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--r-md);
  color: var(--text-on-dark);
  font-family: inherit; font-size: 13.5px; font-weight: 500;
  cursor: pointer;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
.lang__btn svg { width: 16px; height: 16px; color: var(--molten-400); }
.lang__btn:hover,
.lang.is-open .lang__btn { background: rgba(255,255,255,.1); border-color: rgba(245,138,60,.42); }
.lang__caret {
  width: 0; height: 0;
  border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 4.5px solid var(--text-on-dark-dim);
  transition: transform .25s var(--ease);
}
.lang.is-open .lang__caret { transform: rotate(180deg); }

.lang__menu {
  position: absolute; top: calc(100% + 10px); right: 0; z-index: 950;
  min-width: 176px; padding: 6px;
  background: rgba(17, 26, 34, .97);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-lg);
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(8px);
  transition: opacity .25s var(--ease), transform .25s var(--ease-expo), visibility .25s;
}
.lang__menu::before {
  content: ""; position: absolute; top: -10px; left: 0; right: 0; height: 10px;
}
.lang:hover .lang__menu,
.lang:focus-within .lang__menu,
.lang.is-open .lang__menu {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0);
}
.lang__menu a {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 9px 11px; border-radius: var(--r-sm);
  font-size: 13.5px; color: var(--text-on-dark);
  transition: background .2s var(--ease);
}
.lang__menu a:hover { background: rgba(255,255,255,.06); }
.lang__menu a.is-cur { color: var(--molten-300); font-weight: 600; }
.lang__menu a.is-cur::after {
  content: "✓"; font-size: 13px; line-height: 1;
}

/* 移动端抽屉内的语言行 */
.mobile-drawer__lang {
  margin-top: 28px; padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.09);
}
.mobile-drawer__lang-label {
  display: block; margin-bottom: 12px;
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--steel-500);
}
.mobile-drawer__lang-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.mobile-drawer__lang-list a {
  padding: 10px 6px; text-align: center;
  font-size: 13px; color: var(--text-on-dark-dim);
  background: rgba(255,255,255,.04); border-radius: var(--r-sm);
}
.mobile-drawer__lang-list a.is-cur {
  color: var(--molten-300); font-weight: 600;
  background: rgba(228,104,42,.14);
  border: 1px solid rgba(245,138,60,.3);
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--r-md);
  cursor: pointer;
  position: relative;
  padding: 0;
}
.nav-toggle span {
  position: absolute; left: 12px; right: 12px; height: 1.8px;
  background: #fff; border-radius: 2px;
  transition: transform .35s var(--ease-expo), opacity .2s;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; transform: scaleX(.3); }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 移动端抽屉 */
.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 880;
  background: var(--ink-900);
  padding: calc(var(--header-h) + 24px) var(--gutter) 40px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform .45s var(--ease-expo);
  visibility: hidden;
}
.mobile-drawer.is-open { transform: translateX(0); visibility: visible; }
.mobile-drawer__list { border-top: 1px solid rgba(255,255,255,.09); }
.mobile-drawer__link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 17px 2px;
  font-size: 18px; font-weight: 600; color: #E9EFF4;
  border-bottom: 1px solid rgba(255,255,255,.09);
}
.mobile-drawer__link.is-active { color: var(--molten-400); }
.mobile-drawer__link span.idx {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--steel-500); letter-spacing: .1em;
}
.mobile-drawer__sub {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  padding: 12px 0 18px;
  border-bottom: 1px solid rgba(255,255,255,.09);
}
.mobile-drawer__sub a {
  padding: 10px 12px; font-size: 14px; color: var(--text-on-dark-dim);
  background: rgba(255,255,255,.04); border-radius: var(--r-sm);
}
.mobile-drawer__foot { margin-top: 32px; }
.mobile-drawer__foot .btn { width: 100%; justify-content: center; }
.mobile-drawer__contact {
  margin-top: 22px; padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.09);
  font-size: 14px; color: var(--text-on-dark-dim);
}
.mobile-drawer__contact a { color: var(--molten-400); }

/* ---------- 6. 按钮 ---------- */
.btn {
  --btn-bg: var(--molten-500);
  --btn-fg: #fff;
  --btn-bd: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-md);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: transform .3s var(--ease-expo), box-shadow .3s var(--ease),
              background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.btn::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, var(--molten-400), var(--molten-600));
  opacity: 0;
  transition: opacity .35s var(--ease);
  z-index: -1;
}
.btn:hover { transform: translateY(-2px); }
.btn:hover::before { opacity: 1; }
.btn:active { transform: translateY(0); }

.btn--primary { box-shadow: var(--sh-molten); }
.btn--primary:hover { box-shadow: 0 14px 34px rgba(228, 104, 42, .42); }

.btn--ghost {
  --btn-bg: rgba(255,255,255,.07);
  --btn-bd: rgba(255,255,255,.24);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.btn--ghost::before { background: rgba(255,255,255,.14); }
.btn--ghost:hover { border-color: rgba(255,255,255,.5); }

.btn--outline {
  --btn-bg: transparent;
  --btn-fg: var(--molten-600);
  --btn-bd: rgba(228,104,42,.45);
}
.btn--outline::before { background: var(--molten-500); }
.btn--outline:hover { --btn-fg: #fff; box-shadow: var(--sh-molten); }

.btn--dark {
  --btn-bg: var(--ink-850);
  --btn-bd: var(--ink-700);
}
.btn--dark::before { background: var(--ink-700); }

.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--lg { padding: 16px 34px; font-size: 16px; }

.btn__arrow {
  width: 16px; height: 16px;
  transition: transform .35s var(--ease-expo);
}
.btn:hover .btn__arrow { transform: translateX(4px); }

/* 文字链接 */
.tlink {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 14.5px; font-weight: 600;
  color: var(--molten-600);
}
.tlink svg { width: 15px; height: 15px; transition: transform .3s var(--ease-expo); }
.tlink:hover { color: var(--molten-700); }
.tlink:hover svg { transform: translateX(4px); }

/* ---------- 7. Hero（首页大图） ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: stretch;
  padding: calc(var(--header-h) + 60px) 0 0;
  overflow: hidden;
  background: var(--ink-950);
  isolation: isolate;
}
.hero__media { position: absolute; inset: 0; z-index: -3; }
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 42%;
  transform: scale(1.08);
  animation: heroZoom 22s var(--ease) forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }

.hero__scrim {
  position: absolute; inset: 0; z-index: -2;
  background:
    linear-gradient(105deg, rgba(7,11,15,.95) 0%, rgba(7,11,15,.82) 38%, rgba(12,18,24,.42) 68%, rgba(12,18,24,.62) 100%),
    linear-gradient(0deg, rgba(7,11,15,.94) 0%, rgba(7,11,15,0) 42%);
}
/* 工程网格 + 熔融辉光 */
.hero__grid {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(147,167,182,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147,167,182,.055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 30% 50%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 30% 50%, #000 20%, transparent 78%);
}
.hero__glow {
  position: absolute; z-index: -1;
  right: -8%; bottom: -22%;
  width: 60vw; height: 60vw;
  max-width: 820px; max-height: 820px;
  background: radial-gradient(circle, rgba(228,104,42,.28) 0%, rgba(228,104,42,.09) 42%, transparent 70%);
  filter: blur(20px);
  animation: glowPulse 7s ease-in-out infinite;
}
@keyframes glowPulse {
  0%, 100% { opacity: .68; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.07); }
}

.hero__inner {
  position: relative;
  width: 100%;
  display: flex; flex-direction: column; justify-content: center;
  padding-bottom: 190px;
}
.hero__content { max-width: 880px; }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  margin-bottom: 26px;
  padding: 7px 16px 7px 10px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 99px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.hero__eyebrow-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--molten-400);
  box-shadow: 0 0 0 4px rgba(245,138,60,.18);
  animation: blink 2.2s ease-in-out infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.hero__eyebrow span {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--molten-300);
}

.hero__title {
  font-size: clamp(38px, 5.4vw, 70px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 24px;
}
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line > i {
  display: block;
  font-style: normal;
  transform: translateY(105%);
  animation: lineUp .95s var(--ease-expo) forwards;
}
.hero__title .line:nth-child(2) > i { animation-delay: .12s; }
.hero__title .line:nth-child(3) > i { animation-delay: .24s; }
@keyframes lineUp { to { transform: translateY(0); } }

.hero__title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--molten-300) 0%, var(--molten-500) 55%, var(--molten-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__desc {
  max-width: 600px;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(207, 219, 228, .88);
  margin-bottom: 38px;
  opacity: 0;
  animation: fadeUp .9s var(--ease-expo) .38s forwards;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero__actions {
  display: flex; flex-wrap: wrap; gap: 14px;
  opacity: 0;
  animation: fadeUp .9s var(--ease-expo) .5s forwards;
}

/* Hero 底部规格条 */
.hero__specs {
  position: absolute;
  left: var(--gutter); right: var(--gutter); bottom: 34px;
  max-width: var(--container);
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-lg);
  overflow: hidden;
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  opacity: 0;
  animation: fadeUp 1s var(--ease-expo) .72s forwards;
}
.hero__spec {
  padding: 20px 26px;
  background: rgba(12, 18, 24, .55);
  transition: background .35s var(--ease);
}
.hero__spec:hover { background: rgba(30, 44, 56, .7); }
.hero__spec-k {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--steel-400);
  margin-bottom: 7px;
  display: flex; align-items: center; gap: 6px;
}
.hero__spec-k::before {
  content: ""; width: 5px; height: 5px;
  background: var(--molten-500);
  transform: rotate(45deg);
}
.hero__spec-v {
  font-family: var(--font-display);
  font-size: 27px; font-weight: 600; line-height: 1.1;
  color: #fff;
}
.hero__spec-v small { font-size: 14px; font-weight: 500; color: var(--steel-300); margin-left: 3px; }

/* 滚动提示 */
.scroll-cue {
  position: absolute;
  right: var(--gutter); bottom: 130px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--steel-400);
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: .26em; text-transform: uppercase;
}
.scroll-cue::after {
  content: "";
  width: 1px; height: 54px;
  background: linear-gradient(180deg, var(--molten-400), transparent);
  animation: cueDrop 2s ease-in-out infinite;
}
@keyframes cueDrop {
  0%   { transform: scaleY(0); transform-origin: top; }
  45%  { transform: scaleY(1); transform-origin: top; }
  55%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 8. 章节通用 ---------- */
.section { padding: 104px 0; position: relative; }
.section--tight { padding: 76px 0; }
.section--paper { background: var(--paper-50); }
.section--paper2 { background: var(--paper-100); }
.section--dark {
  background: var(--ink-900);
  color: var(--text-on-dark-dim);
}
.section--dark h1, .section--dark h2, .section--dark h3,
.section--dark h4 { color: #fff; }

/* 深色底纹 */
.section--dark::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(147,167,182,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147,167,182,.035) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000, transparent 75%);
}
.section--dark > * { position: relative; }

/* 斜切分隔 */
.divider-angle {
  position: relative;
  height: 70px;
  margin-top: -1px;
  pointer-events: none;
}
.divider-angle--to-dark { background: linear-gradient(to bottom right, var(--white) 49.6%, var(--ink-900) 50%); }
.divider-angle--to-light { background: linear-gradient(to bottom right, var(--ink-900) 49.6%, var(--white) 50%); }
.divider-angle--paper { background: linear-gradient(to bottom right, var(--white) 49.6%, var(--paper-50) 50%); }

/* 章节标题 */
.section-head { margin-bottom: 56px; max-width: 780px; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--split {
  max-width: none;
  display: flex; align-items: flex-end; justify-content: space-between; gap: 40px;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 11px;
  font-family: var(--font-mono);
  font-size: 11.5px; font-weight: 500;
  letter-spacing: .24em; text-transform: uppercase;
  color: var(--molten-600);
  margin-bottom: 16px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1.5px;
  background: currentColor;
  opacity: .6;
}
.section-head--center .eyebrow::after {
  content: ""; width: 26px; height: 1.5px; background: currentColor; opacity: .6;
}
.section--dark .eyebrow { color: var(--molten-400); }

.section-title {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  margin-bottom: 18px;
}
.section-desc {
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text-body);
}
.section--dark .section-desc { color: var(--text-on-dark-dim); }

/* ---------- 9. 数据统计带 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--paper-300);
  border-block: 1px solid var(--paper-300);
}
.stat {
  padding: 44px 30px;
  background: var(--white);
  position: relative;
  transition: background .4s var(--ease);
}
.stat:hover { background: var(--paper-50); }
.stat::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--molten-500), var(--molten-300));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .5s var(--ease-expo);
}
.stat:hover::before { transform: scaleY(1); }
.stat__v {
  font-family: var(--font-display);
  font-size: clamp(40px, 4.6vw, 58px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink-850);
  display: flex; align-items: baseline; gap: 4px;
  font-variant-numeric: tabular-nums;
}
.stat__v sup {
  font-size: .42em; font-weight: 600;
  color: var(--molten-500);
  top: -.7em;
}
.stat__k {
  margin-top: 12px;
  font-size: 14.5px; font-weight: 600; color: var(--text-dark);
}
.stat__d {
  margin-top: 5px;
  font-size: 13px; line-height: 1.65; color: var(--text-muted);
}

/* 五卡变体：首页 / 关于我们统计带（含厂区占地面积） */
.stats--5 { grid-template-columns: repeat(5, 1fr); }
.stats--5 .stat { padding: 42px 22px; }
.stats--5 .stat__v { font-size: clamp(34px, 3.7vw, 48px); }
.stats--5 .stat__d { font-size: 12.5px; }

/* ---------- 10. 能力卡片 ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.cap-card {
  position: relative;
  padding: 34px 30px 32px;
  background: var(--white);
  border: 1px solid var(--paper-300);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform .45s var(--ease-expo), box-shadow .45s var(--ease), border-color .45s var(--ease);
}
.cap-card::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(228,104,42,.075), transparent 62%);
  opacity: 0;
  transition: opacity .4s var(--ease);
  pointer-events: none;
}
.cap-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-lg);
  border-color: rgba(228,104,42,.3);
}
.cap-card:hover::after { opacity: 1; }

.cap-card__no {
  position: absolute; top: 22px; right: 24px;
  font-family: var(--font-display);
  font-size: 46px; font-weight: 700; line-height: 1;
  color: var(--paper-200);
  transition: color .4s var(--ease);
}
.cap-card:hover .cap-card__no { color: rgba(228,104,42,.2); }

.cap-card__ico {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  margin-bottom: 22px;
  border-radius: var(--r-md);
  background: linear-gradient(150deg, var(--ink-850), var(--ink-700));
  color: var(--molten-400);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.09);
  transition: transform .5s var(--ease-expo), background .4s var(--ease);
}
.cap-card:hover .cap-card__ico {
  transform: translateY(-3px) rotate(-6deg);
  background: linear-gradient(150deg, var(--molten-600), var(--molten-500));
  color: #fff;
}
.cap-card__ico svg { width: 27px; height: 27px; }

.cap-card__t { font-size: 19px; font-weight: 700; margin-bottom: 11px; }
.cap-card__d { font-size: 14.5px; line-height: 1.85; color: var(--text-body); margin-bottom: 18px; }
.cap-card__list { display: flex; flex-direction: column; gap: 7px; }
.cap-card__list li {
  display: flex; align-items: flex-start; gap: 9px;
  font-size: 13.5px; color: var(--text-muted); line-height: 1.6;
}
.cap-card__list li::before {
  content: "";
  width: 5px; height: 5px; margin-top: 8px; flex-shrink: 0;
  background: var(--molten-500);
  transform: rotate(45deg);
}

/* 深色版能力卡 */
.section--dark .cap-card {
  background: rgba(255,255,255,.035);
  border-color: rgba(255,255,255,.1);
}
.section--dark .cap-card:hover { border-color: rgba(245,138,60,.4); background: rgba(255,255,255,.06); }
.section--dark .cap-card__no { color: rgba(255,255,255,.09); }
.section--dark .cap-card__t { color: #fff; }
.section--dark .cap-card__d { color: var(--text-on-dark-dim); }
.section--dark .cap-card__list li { color: var(--steel-300); }

/* ---------- 11. 产品展示 ---------- */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 10px 20px;
  font-size: 14px; font-weight: 600;
  color: var(--text-body);
  background: var(--white);
  border: 1px solid var(--paper-300);
  border-radius: 99px;
  cursor: pointer;
  transition: all .3s var(--ease);
}
.filter-btn:hover { border-color: var(--molten-400); color: var(--molten-600); }
.filter-btn.is-active {
  background: var(--ink-850);
  border-color: var(--ink-850);
  color: #fff;
  box-shadow: var(--sh-sm);
}
.filter-btn .cnt {
  font-family: var(--font-mono); font-size: 11px;
  opacity: .55; margin-left: 6px;
}

.prod-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.prod-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--paper-300);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform .45s var(--ease-expo), box-shadow .45s var(--ease), opacity .35s, border-color .4s;
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); border-color: rgba(228,104,42,.32); }
.prod-card.is-hidden { display: none; }

.prod-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(150deg, var(--ink-800), var(--ink-900));
}
.prod-card__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease-expo), filter .5s var(--ease);
}
.prod-card:hover .prod-card__media img { transform: scale(1.08); }

.prod-card__tag {
  position: absolute; top: 12px; left: 12px;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: #fff;
  background: rgba(12,18,24,.72);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 99px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.prod-card__body { padding: 20px 20px 22px; }
.prod-card__t { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.prod-card__d {
  font-size: 13.5px; line-height: 1.7; color: var(--text-muted);
  margin-bottom: 14px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.prod-card__specs {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding-top: 14px;
  border-top: 1px dashed var(--paper-300);
}
.chip {
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: .06em;
  color: var(--steel-600);
  background: var(--paper-100);
  border-radius: var(--r-sm);
}
.prod-card__more {
  position: absolute; inset: auto 0 0 0;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px;
  font-size: 14px; font-weight: 600; color: #fff;
  background: linear-gradient(100deg, var(--molten-600), var(--molten-500));
  transform: translateY(100%);
  transition: transform .4s var(--ease-expo);
}
.prod-card:hover .prod-card__more { transform: translateY(0); }

/* ---------- 12. 工艺流程 ---------- */
.process {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  counter-reset: step;
}
.process::before {
  content: "";
  position: absolute;
  top: 33px; left: 5%; right: 5%;
  height: 2px;
  background: repeating-linear-gradient(90deg,
    rgba(245,138,60,.5) 0 8px, transparent 8px 16px);
}
.step { position: relative; text-align: center; }
.step__dot {
  position: relative;
  width: 68px; height: 68px;
  margin: 0 auto 20px;
  display: grid; place-items: center;
  background: var(--ink-850);
  border: 2px solid rgba(245,138,60,.35);
  border-radius: 50%;
  color: var(--molten-400);
  transition: all .45s var(--ease-expo);
  z-index: 1;
}
.step__dot svg { width: 28px; height: 28px; }
.step:hover .step__dot {
  background: linear-gradient(150deg, var(--molten-500), var(--molten-700));
  border-color: var(--molten-400);
  color: #fff;
  transform: translateY(-5px) scale(1.06);
  box-shadow: 0 12px 30px rgba(228,104,42,.4);
}
.step__no {
  position: absolute; top: -8px; right: -8px;
  width: 24px; height: 24px;
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 700;
  color: var(--ink-900);
  background: var(--molten-300);
  border-radius: 50%;
}
.step__t { font-size: 15.5px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step__d { font-size: 12.8px; line-height: 1.7; color: var(--text-on-dark-dim); }
.step__meta {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: .08em;
  color: var(--steel-500);
}
/* 浅色背景变体 */
.process--light::before {
  background: repeating-linear-gradient(90deg,
    rgba(194, 82, 28, .4) 0 8px, transparent 8px 16px);
}
.process--light .step__dot { background: var(--white); border-color: rgba(194,82,28,.35); color: var(--molten-600); box-shadow: var(--sh-sm); }
.process--light .step:hover .step__dot { background: linear-gradient(150deg, var(--molten-500), var(--molten-700)); color: #fff; }
.process--light .step__no { background: var(--molten-500); color: #fff; }
.process--light .step__t { color: var(--text-dark); }
.process--light .step__d { color: var(--text-muted); }

/* 垂直流程（内页） */
.vprocess { display: flex; flex-direction: column; gap: 0; }
.vstep {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--paper-300);
  transition: background .35s var(--ease);
}
.vstep:last-child { border-bottom: 0; }
.vstep:hover { background: var(--paper-50); }
.vstep__no {
  font-family: var(--font-display);
  font-size: 52px; font-weight: 700; line-height: .9;
  color: var(--paper-300);
  transition: color .35s var(--ease);
}
.vstep:hover .vstep__no { color: var(--molten-400); }
.vstep__t { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.vstep__d { font-size: 14.5px; line-height: 1.85; color: var(--text-body); }
.vstep__tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }

/* ---------- 13. 行业应用 ---------- */
.ind-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.ind-card {
  position: relative;
  padding: 30px 24px 26px;
  border-radius: var(--r-lg);
  border: 1px solid var(--paper-300);
  background: var(--white);
  overflow: hidden;
  transition: transform .45s var(--ease-expo), box-shadow .45s var(--ease), border-color .4s;
}
.ind-card::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--molten-600), var(--molten-300));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s var(--ease-expo);
}
.ind-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: var(--paper-300); }
.ind-card:hover::before { transform: scaleX(1); }
.ind-card__ico {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  margin-bottom: 18px;
  color: var(--molten-600);
  background: rgba(228,104,42,.09);
  border-radius: var(--r-md);
  transition: all .4s var(--ease);
}
.ind-card:hover .ind-card__ico {
  background: var(--ink-850); color: var(--molten-400);
  transform: scale(1.08);
}
.ind-card__ico svg { width: 24px; height: 24px; }
.ind-card__t { font-size: 17px; font-weight: 700; margin-bottom: 9px; }
.ind-card__d { font-size: 13.5px; line-height: 1.8; color: var(--text-muted); }

/* ---------- 14. 图文分栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media { position: relative; }
.split__media-frame {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-lg);
}
.split__media-frame img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: cover;
  transition: transform 1s var(--ease-expo);
}
.split__media-frame:hover img { transform: scale(1.05); }
/* 装饰角标 */
.split__media::before {
  content: "";
  position: absolute;
  top: -18px; left: -18px;
  width: 90px; height: 90px;
  border-top: 2px solid var(--molten-500);
  border-left: 2px solid var(--molten-500);
  border-radius: var(--r-sm) 0 0 0;
  z-index: 2;
}
.split__badge {
  position: absolute;
  bottom: -24px; right: 24px;
  padding: 18px 24px;
  background: var(--ink-850);
  border-radius: var(--r-md);
  box-shadow: var(--sh-lg);
  color: #fff;
  z-index: 2;
}
.split__badge .num {
  font-family: var(--font-display);
  font-size: 34px; font-weight: 700; line-height: 1;
  color: var(--molten-400);
  display: block;
}
.split__badge span:last-child {
  display: block; margin-top: 6px;
  font-size: 12.5px; color: var(--steel-300);
}

.split__body .eyebrow { margin-bottom: 14px; }
.split__title {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800; line-height: 1.28;
  letter-spacing: -0.015em;
  margin-bottom: 20px;
}
.split__text { font-size: 15.5px; line-height: 1.95; margin-bottom: 26px; }
.split__feats { display: flex; flex-direction: column; gap: 14px; margin-bottom: 32px; }
.feat { display: flex; gap: 14px; align-items: flex-start; }
.feat__ico {
  width: 26px; height: 26px; flex-shrink: 0;
  display: grid; place-items: center;
  margin-top: 2px;
  color: var(--molten-600);
  background: rgba(228,104,42,.1);
  border-radius: 50%;
}
.feat__ico svg { width: 14px; height: 14px; }
.feat__t { font-size: 15px; font-weight: 700; color: var(--text-dark); margin-bottom: 2px; }
.feat__d { font-size: 13.8px; line-height: 1.7; color: var(--text-muted); }

/* ---------- 15. 材料表 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--paper-300);
  border-radius: var(--r-lg);
  background: var(--white);
}
.dtable { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 720px; }
.dtable thead th {
  padding: 15px 20px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--steel-300);
  background: var(--ink-850);
  white-space: nowrap;
}
.dtable tbody td {
  padding: 14px 20px;
  border-top: 1px solid var(--paper-200);
  color: var(--text-body);
  vertical-align: top;
}
.dtable tbody tr { transition: background .25s var(--ease); }
.dtable tbody tr:hover { background: var(--paper-50); }
.dtable tbody td:first-child { font-weight: 600; color: var(--text-dark); white-space: nowrap; }
.dtable .grade { font-family: var(--font-mono); font-size: 13px; color: var(--molten-600); }
/* 深色区块内的表格 */
.section--dark .dtable tbody td { color: var(--text-on-dark-dim); border-top-color: rgba(255,255,255,.09); }
.section--dark .dtable tbody td:first-child { color: #fff; }
.section--dark .dtable tbody tr:hover { background: rgba(255,255,255,.05); }
.section--dark .dtable .grade { color: var(--molten-400); }
/* 深色区块内的 FAQ */
.section--dark .faq, .section--dark .faq__item { border-color: rgba(255,255,255,.12); }
.section--dark .faq__q { color: #fff; }
.section--dark .faq__q:hover { color: var(--molten-400); }
.section--dark .faq__ico { border-color: rgba(255,255,255,.25); }
.section--dark .faq__ico::before, .section--dark .faq__ico::after { background: var(--steel-300); }
.section--dark .faq__a-inner { color: var(--text-on-dark-dim); }

/* ---------- 16. 认证 / 资质 ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.cert-grid--3 { grid-template-columns: repeat(3, 1fr); }
.cert-card {
  padding: 30px 22px;
  text-align: center;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-lg);
  transition: all .4s var(--ease-expo);
}
.cert-card:hover {
  transform: translateY(-5px);
  background: rgba(255,255,255,.08);
  border-color: rgba(245,138,60,.4);
}
.cert-card__ico {
  width: 58px; height: 58px;
  margin: 0 auto 16px;
  display: grid; place-items: center;
  color: var(--molten-400);
  border: 1px solid rgba(245,138,60,.3);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(228,104,42,.16), transparent 70%);
}
.cert-card__ico svg { width: 26px; height: 26px; }
.cert-card__t { font-size: 15.5px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.cert-card__d { font-size: 12.8px; line-height: 1.65; color: var(--steel-300); }

/* 认证徽标条 */
.logo-strip {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 14px 44px;
  padding: 34px 0;
  border-block: 1px solid var(--paper-300);
}
.logo-strip__item {
  font-family: var(--font-display);
  font-size: 21px; font-weight: 600;
  letter-spacing: .1em;
  color: var(--steel-300);
  transition: color .3s var(--ease), transform .3s var(--ease);
  white-space: nowrap;
}
.logo-strip__item:hover { color: var(--ink-800); transform: scale(1.05); }

/* ---------- 17. 时间轴（关于我们） ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute; left: 8px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--molten-500), var(--paper-300) 65%, var(--paper-300));
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute; left: -34px; top: 6px;
  width: 18px; height: 18px;
  background: var(--white);
  border: 3px solid var(--paper-300);
  border-radius: 50%;
  transition: all .35s var(--ease);
}
.tl-item:hover::before { border-color: var(--molten-500); transform: scale(1.2); }
.tl-item.is-milestone::before { border-color: var(--molten-500); background: var(--molten-500); }
.tl-year {
  font-family: var(--font-display);
  font-size: 30px; font-weight: 700; line-height: 1;
  color: var(--ink-800);
  margin-bottom: 6px;
}
.tl-item.is-milestone .tl-year { color: var(--molten-600); }
.tl-t { font-size: 16px; font-weight: 700; margin-bottom: 5px; }
.tl-d { font-size: 14px; line-height: 1.8; color: var(--text-muted); max-width: 560px; }

/* ---------- 18. 团队 / 厂区画廊 ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 210px;
  gap: 16px;
}
.gallery__item {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-800);
  cursor: pointer;
}
.gallery__item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease-expo), filter .5s var(--ease);
}
.gallery__item:hover img { transform: scale(1.09); filter: brightness(.72); }
.gallery__cap {
  position: absolute; inset: auto 0 0 0;
  padding: 40px 18px 16px;
  font-size: 14.5px; font-weight: 600; color: #fff;
  background: linear-gradient(0deg, rgba(7,11,15,.88), transparent);
  transform: translateY(6px);
  opacity: .9;
  transition: all .4s var(--ease);
}
.gallery__item:hover .gallery__cap { transform: translateY(0); opacity: 1; }
.gallery__item--wide { grid-column: span 2; }
.gallery__item--tall { grid-row: span 2; }

/* ---------- 18B. 工厂实拍（21:9 全景 + 4:3 工序特写） ---------- */
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.shots__head {
  grid-column: 1 / -1;
  display: flex; align-items: center; gap: 14px;
  margin-top: 46px;
}
.shots__head:first-child { margin-top: 0; }
.shots__label { font-size: 17px; font-weight: 700; color: #fff; white-space: nowrap; }
.shots__note { font-size: 13px; color: rgba(255,255,255,.5); }
.shots__rule { flex: 1; height: 1px; background: rgba(255,255,255,.14); }

.shot {
  margin: 0;
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-850);
  border: 1px solid rgba(255,255,255,.1);
}
.shot--21x9 { grid-column: 1 / -1; }
.shot__frame { aspect-ratio: 4 / 3; background: var(--ink-800); }
.shot--21x9 .shot__frame { aspect-ratio: 21 / 9; }
.shot__frame img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 图位尚未替换实拍时的占位框 */
.shot--empty .shot__frame {
  display: grid; place-content: center; justify-items: center; gap: 12px;
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0 11px, transparent 11px 22px),
    var(--ink-800);
}
.shot__ratio {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: .18em;
  padding: 4px 12px;
  color: var(--molten-300);
  border: 1px dashed rgba(255,176,103,.55);
  border-radius: 99px;
}
.shot__slot { font-size: 13px; line-height: 1.7; color: rgba(255,255,255,.55); text-align: center; }

.shot__cap {
  display: grid; gap: 5px;
  padding: 14px 16px 16px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.shot__head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 9px; }
.shot__no { font-family: var(--font-mono); font-size: 11px; color: var(--molten-400); }
.shot__t { font-size: 15px; font-weight: 700; color: #fff; }
.shot__mark {
  flex: none; margin-left: auto; align-self: center;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .06em; line-height: 1;
  padding: 4px 8px; border-radius: 999px;
  color: rgba(255,255,255,.5); border: 1px solid rgba(255,255,255,.16);
}
.shot__d { font-size: 12.5px; line-height: 1.75; color: rgba(255,255,255,.55); }

.shots__foot {
  display: flex; align-items: center; justify-content: space-between; gap: 22px;
  flex-wrap: wrap;
  margin-top: 34px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.shots__foot p { font-size: 13.5px; line-height: 1.85; color: rgba(255,255,255,.6); max-width: 660px; }

/* ---------- 19. 新闻 ---------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  display: flex; flex-direction: column;
  background: var(--white);
  border: 1px solid var(--paper-300);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform .45s var(--ease-expo), box-shadow .45s var(--ease);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }
.news-card__media { aspect-ratio: 16 / 9; overflow: hidden; background: var(--paper-200); }
.news-card__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease-expo);
}
.news-card:hover .news-card__media img { transform: scale(1.07); }
.news-card__body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.news-card__meta {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: .1em;
  color: var(--text-muted);
}
.news-card__cat {
  padding: 3px 9px;
  color: var(--molten-600);
  background: rgba(228,104,42,.09);
  border-radius: var(--r-sm);
}
.news-card__t {
  font-size: 17.5px; font-weight: 700; line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card:hover .news-card__t { color: var(--molten-600); }
.news-card__x {
  font-size: 14px; line-height: 1.8; color: var(--text-muted);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 18px;
}
.news-card__foot { margin-top: auto; }

/* 新闻列表（内页） */
.news-list { display: flex; flex-direction: column; }
.news-row {
  display: grid;
  grid-template-columns: 108px 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 26px 4px;
  border-bottom: 1px solid var(--paper-300);
  transition: background .3s var(--ease), padding .3s var(--ease);
}
.news-row:first-child { border-top: 1px solid var(--paper-300); }
.news-row:hover { background: var(--paper-50); padding-inline: 16px 4px; }
.news-row__date { text-align: center; }
.news-row__d {
  font-family: var(--font-display);
  font-size: 34px; font-weight: 700; line-height: 1; color: var(--ink-800);
}
.news-row__m {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: .12em; color: var(--text-muted); margin-top: 4px;
}
.news-row:hover .news-row__d { color: var(--molten-600); }
.news-row__t { font-size: 17.5px; font-weight: 700; color: var(--text-dark); margin-bottom: 6px; }
.news-row__x { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.news-row__arrow {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  color: var(--steel-400);
  border: 1px solid var(--paper-300);
  border-radius: 50%;
  transition: all .35s var(--ease);
}
.news-row:hover .news-row__arrow {
  color: #fff; background: var(--molten-500); border-color: var(--molten-500);
  transform: translateX(4px);
}
.news-row__arrow svg { width: 16px; height: 16px; }

/* ---------- 20. CTA 横幅 ---------- */
.cta {
  position: relative;
  padding: 88px 0;
  overflow: hidden;
  background: var(--ink-900);
  isolation: isolate;
}
.cta__bg { position: absolute; inset: 0; z-index: -2; }
.cta__bg img { width: 100%; height: 100%; object-fit: cover; opacity: .3; }
.cta::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(100deg, rgba(7,11,15,.96) 20%, rgba(162,68,26,.5) 100%);
}
.cta__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 44px;
}
.cta__title {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 800; color: #fff;
  line-height: 1.3; letter-spacing: -.015em;
  margin-bottom: 12px;
}
.cta__desc { font-size: 15.5px; color: rgba(214,226,235,.82); max-width: 560px; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 14px; flex-shrink: 0; }

/* ---------- 21. 页脚 ---------- */
.site-footer {
  background: var(--ink-950);
  color: var(--steel-400);
  font-size: 14px;
  padding-top: 72px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 52px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-col__t {
  font-size: 13px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
  font-family: var(--font-mono);
  color: #fff;
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,.09);
}
.footer-about p {
  line-height: 1.9; color: var(--steel-400);
  margin: 20px 0 24px; max-width: 340px;
}
.footer-links li { margin-bottom: 11px; }
.footer-links a {
  color: var(--steel-400);
  display: inline-flex; align-items: center; gap: 8px;
  transition: color .25s, transform .25s var(--ease);
}
.footer-links a::before {
  content: "";
  width: 0; height: 1px;
  background: var(--molten-500);
  transition: width .3s var(--ease-expo);
}
.footer-links a:hover { color: #fff; transform: translateX(3px); }
.footer-links a:hover::before { width: 12px; }

.footer-contact li {
  display: flex; gap: 12px; align-items: flex-start;
  margin-bottom: 16px; line-height: 1.7;
}
.footer-contact svg {
  width: 17px; height: 17px; flex-shrink: 0;
  margin-top: 4px; color: var(--molten-500);
}
.footer-contact strong { display: block; color: #fff; font-weight: 600; font-size: 13px; margin-bottom: 1px; }
.footer-contact a:hover { color: var(--molten-400); }

.footer-qr {
  display: flex; gap: 14px; margin-top: 24px;
}
.qr-box {
  width: 92px; text-align: center;
}
.qr-box__img {
  width: 92px; height: 92px;
  display: grid; place-items: center;
  background: rgba(255,255,255,.06);
  border: 1px dashed rgba(255,255,255,.2);
  border-radius: var(--r-sm);
  font-family: var(--font-mono); font-size: 9px;
  color: var(--steel-500);
  letter-spacing: .08em;
  padding: 6px;
  line-height: 1.4;
}
.qr-box span { display: block; margin-top: 7px; font-size: 11.5px; color: var(--steel-500); }

.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
  padding: 26px 0;
  font-size: 13px;
  color: var(--steel-600);
}
.footer-bottom a:hover { color: var(--molten-400); }
.footer-bottom__links { display: flex; gap: 22px; flex-wrap: wrap; }

/* ---------- 22. 内页横幅 ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 78px) 0 78px;
  background: var(--ink-900);
  overflow: hidden;
  isolation: isolate;
}
.page-hero__bg { position: absolute; inset: 0; z-index: -2; }
.page-hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: .26; }
.page-hero::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(100deg, rgba(7,11,15,.95) 25%, rgba(12,18,24,.6) 100%);
}
.page-hero__glow {
  position: absolute; z-index: -1;
  left: -10%; top: -40%;
  width: 46vw; height: 46vw; max-width: 620px; max-height: 620px;
  background: radial-gradient(circle, rgba(228,104,42,.2), transparent 68%);
  filter: blur(24px);
}
.page-hero__title {
  font-size: clamp(32px, 4.4vw, 52px);
  font-weight: 800; color: #fff;
  letter-spacing: -.02em; line-height: 1.2;
  margin-bottom: 14px;
}
.page-hero__desc { font-size: 16px; color: var(--text-on-dark-dim); max-width: 620px; line-height: 1.85; }

.breadcrumb {
  display: flex; align-items: center; gap: 9px;
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--steel-500);
}
.breadcrumb a:hover { color: var(--molten-400); }
.breadcrumb .sep { opacity: .45; }
.breadcrumb .cur { color: var(--molten-400); }

/* ---------- 23. 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field__label {
  font-size: 13.5px; font-weight: 600; color: var(--text-dark);
  display: flex; align-items: center; gap: 5px;
}
.field__label .req { color: var(--molten-500); }
.field__input,
.field__textarea,
.field__select {
  width: 100%;
  padding: 13px 15px;
  font-size: 14.5px;
  color: var(--text-dark);
  background: var(--white);
  border: 1px solid var(--paper-300);
  border-radius: var(--r-md);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease), background .25s;
  outline: none;
}
.field__textarea { resize: vertical; min-height: 132px; line-height: 1.7; }
.field__input::placeholder, .field__textarea::placeholder { color: #A9B6C1; }
.field__input:focus, .field__textarea:focus, .field__select:focus {
  border-color: var(--molten-500);
  box-shadow: 0 0 0 3.5px rgba(228,104,42,.13);
}
.field__hint { font-size: 12.5px; color: var(--text-muted); }
.field__error { font-size: 12.5px; color: #D9463E; display: none; }
.field.has-error .field__input,
.field.has-error .field__textarea { border-color: #D9463E; }
.field.has-error .field__error { display: block; }

.form-note {
  margin-top: 20px; padding: 16px 18px;
  font-size: 13.5px; line-height: 1.75;
  color: var(--text-body);
  background: var(--paper-100);
  border-left: 3px solid var(--molten-500);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}
.form-success {
  display: none;
  padding: 28px;
  text-align: center;
  background: rgba(34,150,90,.07);
  border: 1px solid rgba(34,150,90,.28);
  border-radius: var(--r-lg);
}
.form-success.is-show { display: block; }
.form-success__t { font-size: 18px; font-weight: 700; color: #1B7A4A; margin-bottom: 6px; }
.form-success__d { font-size: 14px; color: var(--text-body); }

/* 联系信息卡 */
.info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.info-card {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--paper-300);
  border-radius: var(--r-lg);
  transition: all .4s var(--ease-expo);
}
.info-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); border-color: rgba(228,104,42,.3); }
.info-card__ico {
  width: 44px; height: 44px; flex-shrink: 0;
  display: grid; place-items: center;
  color: var(--molten-600);
  background: rgba(228,104,42,.09);
  border-radius: var(--r-md);
}
.info-card__ico svg { width: 21px; height: 21px; }
.info-card__k {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 6px;
}
.info-card__v { font-size: 16.5px; font-weight: 700; color: var(--text-dark); line-height: 1.5; }
.info-card__v a:hover { color: var(--molten-600); }
.info-card__d { font-size: 13.5px; color: var(--text-muted); margin-top: 4px; line-height: 1.65; }

/* 地图占位 */
.map-placeholder {
  position: relative;
  aspect-ratio: 16 / 7;
  border-radius: var(--r-lg);
  overflow: hidden;
  background:
    linear-gradient(rgba(228,104,42,.05), rgba(228,104,42,.05)),
    repeating-linear-gradient(0deg, var(--paper-100) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, var(--paper-100) 0 1px, var(--paper-50) 1px 44px);
  border: 1px solid var(--paper-300);
  display: grid; place-items: center;
}
.map-placeholder__pin {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--steel-500);
}
.map-placeholder__pin svg { width: 34px; height: 34px; color: var(--molten-500); }
.map-placeholder__pin span { font-size: 13.5px; }
.map-placeholder__note {
  position: absolute; left: 16px; bottom: 16px;
  padding: 7px 13px;
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--steel-500);
  background: rgba(255,255,255,.86);
  border: 1px dashed var(--paper-300);
  border-radius: var(--r-sm);
}

/* ---------- 24. 浮动工具条 ---------- */
.dock {
  position: fixed;
  right: 22px; bottom: 26px;
  z-index: 800;
  display: flex; flex-direction: column; gap: 10px;
}
.dock__btn {
  position: relative;
  width: 50px; height: 50px;
  display: grid; place-items: center;
  color: var(--steel-500);
  background: var(--white);
  border: 1px solid var(--paper-300);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--sh-md);
  transition: all .35s var(--ease-expo);
}
.dock__btn svg { width: 21px; height: 21px; }
.dock__btn:hover {
  color: #fff;
  background: var(--molten-500);
  border-color: var(--molten-500);
  transform: translateY(-3px);
  box-shadow: var(--sh-molten);
}
.dock__btn--top { opacity: 0; visibility: hidden; transform: translateY(10px); }
.dock__btn--top.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.dock__btn--quote {
  color: #fff;
  background: linear-gradient(150deg, var(--molten-500), var(--molten-700));
  border-color: transparent;
  box-shadow: var(--sh-molten);
}
.dock__btn--quote::after {
  content: "";
  position: absolute; inset: -4px;
  border: 1.5px solid rgba(228,104,42,.4);
  border-radius: 50%;
  animation: ringPulse 2.4s ease-out infinite;
}
@keyframes ringPulse {
  0%   { transform: scale(.86); opacity: .9; }
  100% { transform: scale(1.32); opacity: 0; }
}
.dock__btn:hover::after { display: none; }
.dock__tip {
  position: absolute;
  right: calc(100% + 12px); top: 50%;
  transform: translateY(-50%) translateX(6px);
  padding: 7px 13px;
  font-size: 13px; font-weight: 600; white-space: nowrap;
  color: #fff; background: var(--ink-850);
  border-radius: var(--r-sm);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: all .3s var(--ease);
}
.dock__btn:hover .dock__tip { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }

/* 二维码弹层 */
.qr-pop {
  position: absolute;
  right: calc(100% + 12px); bottom: 0;
  width: 158px;
  padding: 14px;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--paper-300);
  border-radius: var(--r-md);
  box-shadow: var(--sh-lg);
  opacity: 0; visibility: hidden;
  transform: translateX(8px);
  transition: all .32s var(--ease-expo);
}
.dock__btn:hover .qr-pop { opacity: 1; visibility: visible; transform: translateX(0); }
.qr-pop__img {
  width: 130px; height: 130px; margin: 0 auto 9px;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 9.5px;
  color: var(--steel-400); text-align: center; line-height: 1.5;
  background: var(--paper-100);
  border: 1px dashed var(--paper-300);
  border-radius: var(--r-sm);
}
.qr-pop span { font-size: 12.5px; color: var(--text-body); }

/* ---------- 25. 滚动揭示动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease-expo), transform .8s var(--ease-expo);
  transition-delay: var(--d, 0ms);
}
.reveal.is-in { opacity: 1; transform: translateY(0); }
.reveal-left  { transform: translateX(-32px); }
.reveal-right { transform: translateX(32px); }
.reveal-scale { transform: scale(.95); }
.reveal-left.is-in, .reveal-right.is-in, .reveal-scale.is-in { transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero__title .line > i { transform: none; }
  .hero__desc, .hero__actions, .hero__specs { opacity: 1; }
}

/* ---------- 26. 其他组件 ---------- */
/* 手风琴 FAQ */
.faq { border-top: 1px solid var(--paper-300); }
.faq__item { border-bottom: 1px solid var(--paper-300); }
.faq__q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 22px 4px;
  font-size: 16.5px; font-weight: 600; color: var(--text-dark);
  background: transparent; border: 0; cursor: pointer; text-align: left;
  transition: color .3s var(--ease), padding .3s var(--ease);
}
.faq__q:hover { color: var(--molten-600); padding-inline: 12px 4px; }
.faq__ico {
  width: 26px; height: 26px; flex-shrink: 0;
  position: relative;
  border: 1px solid var(--paper-300);
  border-radius: 50%;
  transition: all .35s var(--ease);
}
.faq__ico::before, .faq__ico::after {
  content: "";
  position: absolute; top: 50%; left: 50%;
  width: 11px; height: 1.6px;
  background: var(--steel-500);
  transform: translate(-50%, -50%);
  transition: transform .35s var(--ease-expo), background .3s;
}
.faq__ico::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq__item.is-open .faq__ico { background: var(--molten-500); border-color: var(--molten-500); }
.faq__item.is-open .faq__ico::before,
.faq__item.is-open .faq__ico::after { background: #fff; }
.faq__item.is-open .faq__ico::after { transform: translate(-50%, -50%) rotate(0); }
.faq__a {
  max-height: 0; overflow: hidden;
  transition: max-height .45s var(--ease-expo);
}
.faq__a-inner {
  padding: 0 60px 24px 4px;
  font-size: 14.8px; line-height: 1.9; color: var(--text-body);
}

/* 规格参数条 */
.spec-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--paper-300); border: 1px solid var(--paper-300); border-radius: var(--r-lg); overflow: hidden; }
.spec-row { padding: 17px 22px; background: var(--white); display: flex; justify-content: space-between; gap: 18px; align-items: baseline; }
.spec-row__k { font-size: 13.5px; color: var(--text-muted); white-space: nowrap; }
.spec-row__v { font-size: 14.5px; font-weight: 600; color: var(--text-dark); text-align: right; font-family: var(--font-mono); }

/* 标签页 */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--paper-300); margin-bottom: 34px; flex-wrap: wrap; }
.tab {
  padding: 13px 22px;
  font-size: 15px; font-weight: 600;
  color: var(--text-muted);
  background: transparent; border: 0; cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all .3s var(--ease);
}
.tab:hover { color: var(--text-dark); }
.tab.is-active { color: var(--molten-600); border-bottom-color: var(--molten-500); }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fadeUp .5s var(--ease-expo); }

/* 占位提示条（开发期可见） */
.todo-flag {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 11px;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase;
  color: #8A6100;
  background: #FFF4D6;
  border: 1px dashed #E0B84C;
  border-radius: var(--r-sm);
}

/* 行内占位符：标出待客户填写的公司专属信息 */
.ph {
  color: #9A6B00;
  background: linear-gradient(180deg, transparent 62%, rgba(224, 184, 76, .3) 62%);
  border-bottom: 1px dashed #D9AE45;
  padding-bottom: 1px;
  cursor: help;
  font-style: normal;
}
.section--dark .ph,
.page-hero .ph,
.cta .ph,
.site-footer .ph {
  color: var(--molten-300);
  background: linear-gradient(180deg, transparent 62%, rgba(245, 138, 60, .26) 62%);
  border-bottom-color: rgba(255, 176, 103, .55);
}
/* 整段占位 */
.ph-block {
  position: relative;
  padding: 20px 22px 20px 24px;
  font-size: 14.5px; line-height: 1.85;
  color: #7A5A12;
  background: rgba(255, 244, 214, .55);
  border: 1px dashed #E0B84C;
  border-radius: var(--r-md);
}
.ph-block::before {
  content: "待填文案";
  position: absolute; top: -9px; left: 18px;
  padding: 1px 9px;
  font-family: var(--font-mono);
  font-size: 9.5px; letter-spacing: .16em;
  color: #8A6100;
  background: #FFF4D6;
  border: 1px solid #E0B84C;
  border-radius: 99px;
}

/* ---------- 27. 响应式 ---------- */
@media (max-width: 1180px) {
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .process::before { display: none; }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .nav__link { padding: 10px 11px; font-size: 14.5px; }
}

@media (max-width: 1024px) {
  .nav, .header-phone, .lang { display: none; }
  .nav-toggle { display: block; }
  .header-cta .btn { display: none; }
  .split { grid-template-columns: 1fr; gap: 56px; }
  .split--reverse .split__media { order: 0; }
  .hero__specs { grid-template-columns: repeat(2, 1fr); position: static; margin-top: 44px; }
  .hero__inner { padding-bottom: 0; }
  .hero { min-height: auto; padding-bottom: 64px; }
  .scroll-cue { display: none; }
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .cta__inner { flex-direction: column; align-items: flex-start; }
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 190px; }
  .shots { grid-template-columns: repeat(2, 1fr); }
  .stats--5 { grid-template-columns: repeat(3, 1fr); }
  .stats--5 .stat { padding: 34px 20px; }
  .stats--5 .stat:nth-child(4) { grid-column: span 2; }
}

@media (max-width: 768px) {
  :root { --gutter: 18px; --header-h: 66px; }
  .section { padding: 72px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head--split { flex-direction: column; align-items: flex-start; gap: 22px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 30px 20px; }
  .stats--5 { grid-template-columns: repeat(2, 1fr); }
  .stats--5 .stat { padding: 30px 20px; }
  .stats--5 .stat__v { font-size: clamp(40px, 4.6vw, 58px); }
  .stats--5 .stat__d { font-size: 13px; }
  .stats--5 .stat:nth-child(4) { grid-column: auto; }
  .stats--5 .stat:last-child { grid-column: span 2; }
  .cap-grid, .prod-grid, .ind-grid, .cert-grid, .news-grid, .form-grid, .spec-list, .info-grid {
    grid-template-columns: 1fr;
  }
  .process { grid-template-columns: repeat(2, 1fr); gap: 28px 14px; }
  .hero__title { font-size: clamp(30px, 8vw, 42px); }
  .hero__desc { font-size: 15.5px; }
  .hero__actions .btn { flex: 1 1 100%; }
  .footer-top { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .vstep { grid-template-columns: 1fr; gap: 12px; }
  .vstep__no { font-size: 40px; }
  .news-row { grid-template-columns: 78px 1fr; gap: 18px; }
  .news-row__arrow { display: none; }
  .gallery { grid-template-columns: 1fr; grid-auto-rows: 200px; }
  .gallery__item--wide, .gallery__item--tall { grid-column: auto; grid-row: auto; }
  .shots { grid-template-columns: 1fr; gap: 14px; }
  .shots__head { flex-wrap: wrap; gap: 8px 12px; margin-top: 34px; }
  .shots__rule { display: none; }
  .shot--21x9 .shot__frame { aspect-ratio: 16 / 9; }
  .shots__foot .btn { flex: 1 1 100%; justify-content: center; }
  .faq__a-inner { padding-right: 4px; }
  .dock { right: 14px; bottom: 16px; }
  .dock__btn { width: 46px; height: 46px; }
  .split__badge { right: 14px; bottom: -18px; padding: 14px 18px; }
  .split__media::before { width: 56px; height: 56px; top: -12px; left: -12px; }
  .table-wrap { border-radius: var(--r-md); }
}

@media (max-width: 420px) {
  .process { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .stats--5 .stat:last-child { grid-column: auto; }
  .hero__specs { grid-template-columns: 1fr; }
}

/* 打印 */
@media print {
  .site-header, .dock, .scroll-progress, .mobile-drawer, .cta { display: none !important; }
  body { color: #000; }
  .section { padding: 24px 0; }
}