/* ============================================================
   HANSHENG PRECISION — Global Stylesheet v2
   深色工业 · 大气视觉系统
   ============================================================ */

:root {
  /* 背景层次 */
  --bg-0: #05070a;
  --bg-1: #090d12;
  --bg-2: #0e141b;
  --bg-3: #141c25;
  --bg-4: #1a242f;

  /* 描边 */
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.13);
  --line-bright: rgba(255, 255, 255, 0.22);

  /* 文字 */
  --ink-0: #ffffff;
  --ink-1: #d4dee8;
  --ink-2: #93a3b4;
  --ink-3: #5f6f80;
  --ink-4: #3d4a58;

  /* 品牌色 */
  --accent: #ff6a2b;
  --accent-soft: #ff8f57;
  --accent-dim: rgba(255, 106, 43, 0.1);
  --accent-line: rgba(255, 106, 43, 0.32);
  --cyan: #3fd8dd;

  --grad-accent: linear-gradient(118deg, #ff5a1f 0%, #ff9a4d 100%);
  --grad-text: linear-gradient(120deg, #ff7a3d 0%, #ffb37a 48%, #ff7a3d 100%);

  /* 圆角 */
  --r-xs: 4px;
  --r-s: 8px;
  --r-m: 14px;
  --r-l: 22px;
  --r-xl: 32px;

  /* 阴影 */
  --shadow-sm: 0 4px 18px -6px rgba(0, 0, 0, 0.6);
  --shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.9);
  --shadow-lg: 0 60px 120px -50px rgba(0, 0, 0, 1);

  --maxw: 1320px;
  --gut: clamp(20px, 5vw, 48px);

  --font-latin: "Inter", -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", "Roboto Mono", Consolas, monospace;

  --nav-h: 84px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--ink-2);
  font-family: var(--font-latin), var(--font-cn);
  font-size: 16.5px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.lang-cn { font-family: var(--font-cn); }
body.lang-en, body.lang-ru, body.lang-de, body.lang-ms, body.lang-vi,
body.lang-tw { font-family: var(--font-latin); }
body.lang-tw { font-family: "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", var(--font-cn); }
body.lang-ar { font-family: "Noto Naskh Arabic", "Segoe UI", "Geeza Pro", "Arial", sans-serif; }
body.lang-ur { font-family: "Noto Nastaliq Urdu", "Jameel Noori Nastaleeq", "Segoe UI", "Arial", sans-serif; }
body.lang-th { font-family: "Noto Sans Thai", "Leelawadee UI", "Tahoma", var(--font-latin), sans-serif; }
/* 印地语：天城文，行高需更大以免元音符号被裁切 */
body.lang-hi {
  font-family: "Noto Sans Devanagari", "Nirmala UI", "Mangal", "Kohinoor Devanagari", var(--font-latin), sans-serif;
  line-height: 1.88;
}
/* 孟加拉语：字形上下延伸更多，行高再放大 */
body.lang-bn {
  font-family: "Noto Sans Bengali", "Nirmala UI", "Vrinda", "Kohinoor Bangla", var(--font-latin), sans-serif;
  line-height: 1.92;
}
body.lang-hi h1, body.lang-hi h2, body.lang-hi h3, body.lang-hi h4,
body.lang-bn h1, body.lang-bn h2, body.lang-bn h3, body.lang-bn h4 {
  line-height: 1.42;
  letter-spacing: 0;
}
/* 天城文/孟加拉文没有斜体传统，统一用正常字形 */
body.lang-hi em, body.lang-hi i,
body.lang-bn em, body.lang-bn i { font-style: normal; }

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4, h5 {
  color: var(--ink-0);
  line-height: 1.14;
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.028em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.4rem, 5.6vw, 5.2rem); font-weight: 620; letter-spacing: -0.036em; }
h2 { font-size: clamp(1.9rem, 3.8vw, 3.4rem); font-weight: 600; letter-spacing: -0.032em; }
h3 { font-size: clamp(1.15rem, 1.5vw, 1.4rem); letter-spacing: -0.018em; }
h4 { font-size: 1.02rem; letter-spacing: -0.008em; }
h5 { font-size: 0.9rem; letter-spacing: 0; }

p { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }

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

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb {
  background: #1e2833;
  border-radius: 10px;
  border: 2px solid var(--bg-0);
}
::-webkit-scrollbar-thumb:hover { background: #2c3a49; }

/* ============================================================
   布局骨架
   ============================================================ */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gut);
}

.wrap--narrow { max-width: 900px; }
.wrap--wide { max-width: 1520px; }

section { position: relative; }

.sec { padding: clamp(84px, 11vw, 168px) 0; }
.sec--tight { padding: clamp(64px, 7vw, 104px) 0; }
.sec--alt { background: var(--bg-1); }

/* 顶部细线 */
.sec--line { border-top: 1px solid var(--line); }

.sec-head {
  max-width: 820px;
  margin-bottom: clamp(44px, 5.5vw, 84px);
}

.sec-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.sec-head--wide { max-width: 1020px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
  font-weight: 500;
}

.eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.sec-head--center .eyebrow::before { display: none; }

.lede {
  font-size: clamp(1.02rem, 1.25vw, 1.18rem);
  color: var(--ink-2);
  margin-top: 24px;
  line-height: 1.78;
  max-width: 74ch;
}

.sec-head--center .lede { margin-left: auto; margin-right: auto; }

/* 强调数字 */
.mono { font-family: var(--font-mono); letter-spacing: 0.06em; }
.hl { color: var(--accent); }
.hl-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============================================================
   顶部导航
   ============================================================ */
.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 900;
  display: flex;
  align-items: center;
  transition: background 0.4s var(--ease), border-color 0.4s, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}

.topbar.is-stuck {
  background: rgba(5, 7, 10, 0.78);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  border-bottom-color: var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gut);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__mark {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  transition: transform 0.4s var(--ease);
}

.brand:hover .brand__mark { transform: rotate(90deg); }

.brand__text { display: flex; flex-direction: column; line-height: 1.1; }

.brand__name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink-0);
  letter-spacing: 0.13em;
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 0.53rem;
  letter-spacing: 0.22em;
  color: var(--ink-4);
  text-transform: uppercase;
  margin-top: 3px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.nav__link {
  position: relative;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--ink-2);
  transition: color 0.25s;
  white-space: nowrap;
}

.nav__link:hover { color: var(--ink-0); }

.nav__link.is-active { color: var(--ink-0); }

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 1.5px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 12px var(--accent);
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* ============================================================
   语言切换（12 语言 · 分组网格面板）
   ============================================================ */
.langpick { position: relative; }

.langpick__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 11px;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.025);
  color: var(--ink-2);
  font: inherit;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease), background 0.24s var(--ease);
}

.langpick__btn:hover,
.langpick__btn[aria-expanded="true"] {
  color: var(--ink-1);
  border-color: var(--accent);
  background: rgba(255, 106, 43, 0.08);
}

.langpick__caret { transition: transform 0.24s var(--ease); opacity: 0.7; }
.langpick__btn[aria-expanded="true"] .langpick__caret { transform: rotate(180deg); }

/* 面板本体 */
.langpick__panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 400px;
  padding: 16px 16px 14px;
  background: linear-gradient(180deg, #0e131a 0%, #0a0e14 100%);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  box-shadow: 0 32px 70px -20px rgba(0, 0, 0, 0.85);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.985);
  transform-origin: top right;
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
  z-index: 300;
  max-height: calc(100vh - var(--nav-h) - 24px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.langpick__panel.is-open { opacity: 1; visibility: visible; transform: none; }

/* 面板头 */
.langpick__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 2px 4px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 12px;
}

.langpick__title {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.82rem;
  font-weight: 650;
  color: var(--ink-0);
  letter-spacing: 0.01em;
}

.langpick__sub {
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3, #6b7684);
}

.langpick__close {
  display: none;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: none;
  color: var(--ink-2);
  cursor: pointer;
}

/* 分组 */
.langpick__group { padding: 0 2px; }
.langpick__group + .langpick__group { margin-top: 12px; }

.langpick__gtitle {
  display: flex;
  align-items: baseline;
  gap: 7px;
  margin: 0 0 7px 2px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.langpick__gtitle em {
  font-style: normal;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-3, #6b7684);
  opacity: 0.85;
}

.langpick__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
}

/* 单个语言项 */
.langpick__item {
  display: grid;
  grid-template-columns: 24px 1fr;
  grid-template-rows: auto auto;
  column-gap: 8px;
  align-items: center;
  width: 100%;
  padding: 7px 9px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.022);
  color: var(--ink-2);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}

.langpick__item:hover {
  background: rgba(255, 255, 255, 0.065);
  color: var(--ink-0);
  border-color: rgba(255, 255, 255, 0.08);
}

.langpick__item.is-on {
  background: rgba(255, 106, 43, 0.13);
  border-color: rgba(255, 106, 43, 0.4);
  color: var(--accent);
}

.langpick__code {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  opacity: 0.9;
}

.langpick__item.is-on .langpick__code {
  background: var(--accent);
  color: #fff;
  opacity: 1;
}

.langpick__name {
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.langpick__region {
  grid-column: 2;
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--ink-3, #6b7684);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.langpick__item.is-on .langpick__region { color: rgba(255, 138, 90, 0.85); }

/* 各语种名称尽量用原生字形 */
.langpick__item[lang="hi"] .langpick__name,
.langpick__item[lang="bn"] .langpick__name { font-size: 0.84rem; line-height: 1.5; }
.langpick__item[lang="th"] .langpick__name { font-size: 0.84rem; }

/* 竖屏窄屏：变为底部抽屉，避免面板被裁 */
@media (max-width: 620px) {
  .langpick__panel {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-height: 78vh;
    padding: 14px 14px calc(14px + env(safe-area-inset-bottom, 0px));
    border-radius: 18px 18px 0 0;
    border-left: 0;
    border-right: 0;
    border-bottom: 0;
    transform: translateY(14px);
    transform-origin: bottom center;
  }

  .langpick__panel.is-open { transform: none; }
  .langpick__close { display: inline-flex; }
  .langpick__grid { gap: 4px; }
  .langpick__name { font-size: 0.78rem; }
  .langpick__region { display: none; }
  .langpick__item { grid-template-rows: auto; padding: 8px; }
}

/* 中等宽度（平板横屏）避免右侧溢出 */
@media (min-width: 621px) and (max-width: 900px) {
  .langpick__panel { width: 360px; }
}

/* RTL（阿拉伯语 / 乌尔都语） */
[dir="rtl"] body, body.is-rtl { text-align: right; }
body.is-rtl .nav__links, body.is-rtl .footer__col, body.is-rtl .spec-table,
body.is-rtl .form__row, body.is-rtl .meta-list { direction: rtl; }
body.is-rtl .langpick__panel { right: auto; left: 0; transform-origin: top left; }
body.is-rtl .langpick__item { text-align: right; }
body.is-rtl .langpick__item .langpick__code { grid-column: 1; }
body.is-rtl .langpick__name, body.is-rtl .langpick__region { grid-column: 2; }
@media (max-width: 620px) {
  body.is-rtl .langpick__panel { left: 0; right: 0; transform-origin: bottom center; }
}
body.is-rtl .crumb, body.is-rtl .section__head { text-align: right; }
body.is-rtl .drawer__link, body.is-rtl .footer__col a { text-align: right; }
body.is-rtl .num, body.is-rtl .stat__num, body.is-rtl [data-num] { direction: ltr; unicode-bidi: embed; }

/* RTL 时文字方向不影响图形元素 */
body.is-rtl .hero__grid, body.is-rtl svg { direction: ltr; }

.burger {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-s);
  background: rgba(255, 255, 255, 0.025);
  cursor: pointer;
  position: relative;
  padding: 0;
}

.burger span {
  position: absolute;
  left: 12px;
  width: 18px;
  height: 1.6px;
  background: var(--ink-1);
  transition: 0.34s var(--ease);
  border-radius: 2px;
}

.burger span:nth-child(1) { top: 16px; }
.burger span:nth-child(2) { top: 21.5px; }
.burger span:nth-child(3) { top: 27px; }

.burger.is-open span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0.3); }
.burger.is-open span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* 移动端抽屉 */
.drawer {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  background: rgba(6, 9, 13, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--line);
  padding: 8px var(--gut) 28px;
  transform: translateY(-14px);
  opacity: 0;
  pointer-events: none;
  transition: 0.38s var(--ease);
  z-index: 890;
  max-height: calc(100vh - var(--nav-h));
  overflow-y: auto;
}

.drawer.is-open {
  transform: none;
  opacity: 1;
  pointer-events: auto;
}

.drawer__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 2px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-1);
  font-size: 1rem;
  transition: color 0.2s, padding-left 0.25s;
}

.drawer__link:hover { padding-left: 6px; }
.drawer__link.is-active { color: var(--accent); }
.drawer__link span:last-child {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-4);
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 100px;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: 0.28s var(--ease);
  white-space: nowrap;
  font-family: inherit;
  letter-spacing: 0.01em;
}

.btn svg { width: 16px; height: 16px; transition: transform 0.28s var(--ease); }
.btn:hover svg { transform: translateX(4px); }

.btn--primary {
  background: var(--grad-accent);
  color: #fff;
  box-shadow: 0 14px 38px -14px rgba(255, 106, 43, 0.9);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 50px -14px rgba(255, 106, 43, 1);
}

.btn--ghost {
  border-color: var(--line-strong);
  color: var(--ink-0);
  background: rgba(255, 255, 255, 0.025);
}

.btn--ghost:hover {
  border-color: var(--line-bright);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
}

.btn--white {
  background: #fff;
  color: #0a0e13;
}

.btn--white:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

.btn--sm { padding: 10px 22px; font-size: 0.84rem; }
.btn--lg { padding: 18px 40px; font-size: 0.98rem; }
.btn--block { width: 100%; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  transition: gap 0.25s var(--ease);
}

.link-arrow svg { width: 15px; height: 15px; }
.link-arrow:hover { gap: 14px; }

/* ============================================================
   首页 Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 72px) 0 110px;
  overflow: hidden;
  background: var(--bg-0);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: radial-gradient(ellipse 100% 80% at 55% 35%, #000 10%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 100% 80% at 55% 35%, #000 10%, transparent 80%);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(130px);
}

.hero__glow--1 {
  width: 760px; height: 760px;
  background: radial-gradient(circle, rgba(255, 106, 43, 0.5), transparent 66%);
  top: -280px; right: -140px;
  opacity: 0.62;
}

.hero__glow--2 {
  width: 620px; height: 620px;
  background: radial-gradient(circle, rgba(63, 216, 221, 0.2), transparent 68%);
  bottom: -280px; left: -180px;
  opacity: 0.5;
}

.hero__glow--3 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(255, 154, 77, 0.22), transparent 68%);
  top: 40%; left: 42%;
  opacity: 0.35;
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.14fr 0.86fr;
  gap: clamp(36px, 5vw, 96px);
  align-items: center;
  width: 100%;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  padding: 7px 17px 7px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.035);
  font-size: 0.79rem;
  color: var(--ink-1);
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
}

.hero__tag b {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  background: var(--accent);
  color: #fff;
  padding: 4px 10px;
  border-radius: 100px;
  font-weight: 600;
}

.hero h1 { margin-bottom: 30px; }

.hero h1 em {
  font-style: normal;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__desc {
  font-size: clamp(1.02rem, 1.3vw, 1.16rem);
  color: var(--ink-2);
  max-width: 560px;
  line-height: 1.82;
  margin-bottom: 42px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 64px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  padding-top: 32px;
  max-width: 580px;
}

.hero__stat { padding-right: 20px; border-right: 1px solid var(--line); }
.hero__stat:last-child { border-right: 0; padding-right: 0; }
.hero__stat + .hero__stat { padding-left: 26px; }

.hero__stat b {
  display: block;
  font-size: clamp(1.9rem, 2.9vw, 2.6rem);
  font-weight: 620;
  color: var(--ink-0);
  letter-spacing: -0.04em;
  line-height: 1;
  font-family: var(--font-latin);
}

.hero__stat b i {
  font-style: normal;
  font-size: 0.5em;
  color: var(--accent);
  margin-left: 3px;
  font-weight: 500;
}

.hero__stat span {
  display: block;
  font-size: 0.78rem;
  color: var(--ink-3);
  margin-top: 10px;
  letter-spacing: 0.015em;
}

/* Hero 视觉 */
.hero__visual {
  position: relative;
  aspect-ratio: 4 / 4.35;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(26, 36, 47, 0.9), rgba(8, 12, 17, 0.98));
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, transparent 42%, rgba(5, 7, 10, 0.9) 100%);
  pointer-events: none;
}

.hero__visual svg { position: absolute; inset: 0; width: 100%; height: 100%; }

.hero__badge {
  position: absolute;
  left: 20px;
  bottom: 20px;
  right: 20px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 20px;
  border-radius: var(--r-m);
  border: 1px solid var(--line-strong);
  background: rgba(9, 13, 18, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.hero__badge-l { display: flex; flex-direction: column; gap: 3px; }
.hero__badge-l b { font-size: 0.86rem; color: var(--ink-0); font-weight: 500; }
.hero__badge-l span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--ink-3);
  letter-spacing: 0.14em;
}

.hero__badge-r {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.dot-live {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(63, 216, 221, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(63, 216, 221, 0); }
  100% { box-shadow: 0 0 0 0 rgba(63, 216, 221, 0); }
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.24em;
  color: var(--ink-4);
  text-transform: uppercase;
}

.scroll-hint i {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--ink-3), transparent);
}

/* ============================================================
   跑马灯
   ============================================================ */
.ticker {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-1);
  padding: 32px 0;
  overflow: hidden;
}

.ticker__label {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-4);
  text-align: center;
  margin-bottom: 22px;
}

.marquee {
  display: flex;
  gap: 64px;
  width: max-content;
  animation: slide 44s linear infinite;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee:hover { animation-play-state: paused; }

@keyframes slide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.marquee__item {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--ink-4);
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: color 0.3s;
}

.marquee__item:hover { color: var(--ink-1); }
.marquee__item svg { width: 18px; height: 18px; opacity: 0.5; }

/* ============================================================
   网格与卡片
   ============================================================ */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.card {
  position: relative;
  padding: 36px 32px;
  border-radius: var(--r-l);
  border: 1px solid var(--line);
  background: linear-gradient(168deg, rgba(255, 255, 255, 0.038), rgba(255, 255, 255, 0.006));
  transition: 0.4s var(--ease);
  overflow: hidden;
  height: 100%;
}

.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.card::after {
  content: "";
  position: absolute;
  width: 280px; height: 280px;
  border-radius: 50%;
  top: -140px; right: -140px;
  background: radial-gradient(circle, rgba(255, 106, 43, 0.12), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-line);
  background: linear-gradient(168deg, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.014));
  box-shadow: var(--shadow);
}

.card:hover::before, .card:hover::after { opacity: 1; }

.card__icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: var(--accent-dim);
  border: 1px solid rgba(255, 106, 43, 0.22);
  color: var(--accent);
  margin-bottom: 24px;
  transition: 0.4s var(--ease);
}

.card:hover .card__icon {
  background: rgba(255, 106, 43, 0.18);
  border-color: rgba(255, 106, 43, 0.5);
  transform: scale(1.06);
}

.card__icon svg { width: 23px; height: 23px; }

.card h3 { margin-bottom: 12px; }
.card p { font-size: 0.92rem; color: var(--ink-2); line-height: 1.75; margin: 0; }

.card__num {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--ink-4);
  letter-spacing: 0.18em;
  margin-bottom: 16px;
  display: block;
}

.rule { height: 1px; background: var(--line); margin: 0; border: 0; }

/* ============================================================
   数据条
   ============================================================ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  overflow: hidden;
  background: linear-gradient(160deg, var(--bg-2), var(--bg-1));
  position: relative;
}

.stats-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 84px 100%;
  pointer-events: none;
}

.stats-bar__item {
  padding: 46px 32px;
  border-right: 1px solid var(--line);
  position: relative;
}

.stats-bar__item:last-child { border-right: 0; }

.stats-bar__item b {
  display: block;
  font-size: clamp(2.1rem, 3.4vw, 3.1rem);
  color: var(--ink-0);
  font-weight: 620;
  letter-spacing: -0.045em;
  line-height: 1;
  font-family: var(--font-latin);
}

.stats-bar__item b i {
  font-style: normal;
  font-size: 0.44em;
  color: var(--accent);
  margin-left: 4px;
  font-weight: 500;
}

.stats-bar__item span {
  display: block;
  margin-top: 12px;
  font-size: 0.84rem;
  color: var(--ink-3);
}

/* ============================================================
   工艺流程
   ============================================================ */
.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
  margin-top: 8px;
}

.flow::before {
  content: "";
  position: absolute;
  top: 25px;
  left: 5%;
  right: 5%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 10%, var(--line-strong) 90%, transparent);
}

.flow__step { position: relative; padding-right: 22px; }

.flow__dot {
  width: 50px; height: 50px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--bg-0);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-2);
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
  transition: 0.4s var(--ease);
}

.flow__step:hover .flow__dot {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 7px var(--accent-dim), 0 0 24px -4px rgba(255, 106, 43, 0.5);
}

.flow__step h4 { margin-bottom: 9px; color: var(--ink-0); }
.flow__step p { font-size: 0.86rem; color: var(--ink-3); margin: 0; line-height: 1.68; }

/* ============================================================
   分栏图文
   ============================================================ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 104px);
  align-items: center;
}

.split--flip .split__media { order: 2; }

.split__media {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  aspect-ratio: 4 / 3.15;
  background: var(--bg-2);
  box-shadow: var(--shadow);
}

.split__media svg { width: 100%; height: 100%; display: block; }

.split__body ul {
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
  display: grid;
  gap: 18px;
}

.split__body ul li {
  display: flex;
  gap: 14px;
  font-size: 0.94rem;
  color: var(--ink-1);
  line-height: 1.7;
}

.split__body ul li::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border-radius: 50%;
  background-color: var(--accent-dim);
  border: 1px solid rgba(255, 106, 43, 0.45);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ff6a2b' stroke-width='3.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 9px;
  background-repeat: no-repeat;
  background-position: center;
}

.split__body ul li strong { color: var(--ink-0); font-weight: 600; }

/* ============================================================
   产品卡
   ============================================================ */
.prod {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  overflow: hidden;
  background: linear-gradient(150deg, var(--bg-2), var(--bg-1));
  transition: 0.45s var(--ease);
}

.prod:hover {
  border-color: var(--accent-line);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.prod:nth-child(even) { direction: rtl; }
.prod:nth-child(even) > * { direction: ltr; }

.prod__media {
  position: relative;
  min-height: 340px;
  background: linear-gradient(150deg, #111922, #070b0f);
  display: grid;
  place-items: center;
  overflow: hidden;
  border-right: 1px solid var(--line);
}

.prod__media svg { width: 100%; height: 100%; }

.prod__body { padding: clamp(32px, 4.2vw, 60px); }

.prod__code {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 18px;
  display: block;
}

.prod__body h3 { font-size: clamp(1.35rem, 2.1vw, 1.85rem); margin-bottom: 16px; }
.prod__body > p { color: var(--ink-2); font-size: 0.95rem; margin-bottom: 26px; }

.prod__specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  overflow: hidden;
  margin-bottom: 28px;
}

.prod__specs div { background: var(--bg-0); padding: 16px 18px; }
.prod__specs b { display: block; font-size: 1rem; color: var(--ink-0); font-weight: 600; }
.prod__specs span { display: block; font-size: 0.7rem; color: var(--ink-3); margin-top: 4px; }

/* ============================================================
   认证卡
   ============================================================ */
.cert {
  aspect-ratio: 1 / 1.02;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px 26px;
  border-radius: var(--r-l);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.008));
  transition: 0.4s var(--ease);
}

.cert:hover {
  border-color: var(--accent-line);
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.cert__top { display: flex; justify-content: space-between; align-items: flex-start; }

.cert__seal {
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 106, 43, 0.38);
  display: grid;
  place-items: center;
  color: var(--accent);
  background: var(--accent-dim);
}

.cert__seal svg { width: 20px; height: 20px; }

.cert__yr {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--ink-4);
  letter-spacing: 0.12em;
}

.cert b { display: block; font-size: 1.04rem; color: var(--ink-0); margin-bottom: 8px; }
.cert span { font-size: 0.79rem; color: var(--ink-3); line-height: 1.58; display: block; }

/* ============================================================
   地图
   ============================================================ */
.map-board {
  position: relative;
  border-radius: var(--r-xl);
  border: 1px solid var(--line-strong);
  background: radial-gradient(ellipse at 50% 40%, #0e1720 0%, #06090d 74%);
  overflow: hidden;
  padding: 24px;
  box-shadow: var(--shadow);
}

.map-board svg { width: 100%; height: auto; display: block; }

.region-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }

.region {
  display: flex;
  gap: 18px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, 0.018);
  transition: 0.32s var(--ease);
}

.region:hover {
  border-color: var(--accent-line);
  background: rgba(255, 255, 255, 0.045);
  transform: translateX(3px);
}

.region__pct {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
  width: 50px;
}

.region__txt b { display: block; color: var(--ink-0); font-size: 0.95rem; margin-bottom: 4px; }
.region__txt span { font-size: 0.79rem; color: var(--ink-3); line-height: 1.55; }

/* ============================================================
   CTA
   ============================================================ */
.cta {
  position: relative;
  border-radius: var(--r-xl);
  border: 1px solid rgba(255, 106, 43, 0.2);
  background:
    radial-gradient(ellipse 70% 130% at 82% 4%, rgba(255, 106, 43, 0.18), transparent 60%),
    radial-gradient(ellipse 60% 100% at 10% 96%, rgba(63, 216, 221, 0.07), transparent 60%),
    linear-gradient(160deg, #101922, #070b0f);
  padding: clamp(48px, 7vw, 96px) clamp(28px, 6vw, 88px);
  overflow: hidden;
  text-align: center;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(ellipse 74% 96% at 50% 24%, #000, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 74% 96% at 50% 24%, #000, transparent 78%);
  pointer-events: none;
}

.cta > * { position: relative; z-index: 2; }
.cta h2 { margin-bottom: 20px; }
.cta p {
  color: var(--ink-2);
  max-width: 620px;
  margin: 0 auto 40px;
  font-size: 1.02rem;
  line-height: 1.78;
}
.cta__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   内页头图
   ============================================================ */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 100px) 0 clamp(68px, 8vw, 116px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: var(--bg-0);
}

.page-hero__bg { position: absolute; inset: 0; pointer-events: none; }

.page-hero__bg .hero__grid {
  mask-image: radial-gradient(ellipse 110% 110% at 25% -10%, #000, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 110% 110% at 25% -10%, #000, transparent 72%);
  opacity: 0.8;
}

.page-hero__glow {
  position: absolute;
  width: 620px; height: 620px;
  border-radius: 50%;
  filter: blur(140px);
  background: radial-gradient(circle, rgba(255, 106, 43, 0.26), transparent 70%);
  top: -320px; right: 2%;
}

.page-hero__inner { position: relative; z-index: 2; }

.crumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--ink-4);
  text-transform: uppercase;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.crumb a:hover { color: var(--ink-1); }
.crumb em { font-style: normal; color: var(--accent); }

.page-hero h1 { font-size: clamp(2.1rem, 4.6vw, 4rem); max-width: 980px; }
.page-hero .lede { max-width: 700px; }

/* ============================================================
   关于：时间线
   ============================================================ */
.timeline { position: relative; padding-left: 38px; margin-top: 10px; }

.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 10px; bottom: 10px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--line) 26%, var(--line) 88%, transparent);
}

.tl-item { position: relative; padding-bottom: 44px; }
.tl-item:last-child { padding-bottom: 0; }

.tl-item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 7px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px rgba(255, 106, 43, 0.1);
}

.tl-item__yr {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  display: block;
}

.tl-item h4 { margin-bottom: 8px; color: var(--ink-0); }
.tl-item p { font-size: 0.92rem; color: var(--ink-2); margin: 0; line-height: 1.72; }

.value {
  padding: 30px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 22px;
}

.value__n {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  padding-top: 2px;
}

.value h4 { margin-bottom: 10px; }
.value p { font-size: 0.92rem; color: var(--ink-2); margin: 0; line-height: 1.72; }

/* ============================================================
   联系页
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}

.info-block { padding: 30px 0; border-bottom: 1px solid var(--line); }
.info-block:first-child { padding-top: 0; }

.info-block__label {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 9px;
}

.info-block__label svg { width: 14px; height: 14px; color: var(--accent); }

.info-block b { display: block; color: var(--ink-0); font-size: 1.02rem; font-weight: 500; margin-bottom: 6px; line-height: 1.5; }
.info-block a { color: var(--ink-1); transition: color 0.2s; }
.info-block a:hover { color: var(--accent); }
.info-block p { font-size: 0.89rem; color: var(--ink-3); margin: 0; }

/* 表单 */
.form {
  padding: clamp(32px, 4.2vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: linear-gradient(168deg, rgba(255, 255, 255, 0.042), rgba(255, 255, 255, 0.008));
  box-shadow: var(--shadow);
}

.form h3 { margin-bottom: 10px; font-size: 1.35rem; }
.form__sub { font-size: 0.89rem; color: var(--ink-3); margin-bottom: 32px; line-height: 1.7; }

.field { margin-bottom: 20px; }

.field label {
  display: block;
  font-size: 0.79rem;
  color: var(--ink-2);
  margin-bottom: 9px;
  letter-spacing: 0.015em;
}

.field label i { color: var(--accent); font-style: normal; }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--r-s);
  border: 1px solid var(--line-strong);
  background: rgba(5, 7, 10, 0.6);
  color: var(--ink-0);
  font: inherit;
  font-size: 0.92rem;
  transition: 0.25s var(--ease);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2393a3b4' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.field textarea { resize: vertical; min-height: 130px; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 106, 43, 0.13);
  background: rgba(5, 7, 10, 0.85);
}

.field input::placeholder,
.field textarea::placeholder { color: var(--ink-4); }

.field select option { background: var(--bg-2); color: var(--ink-0); }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.form__note { font-size: 0.75rem; color: var(--ink-4); margin-top: 16px; line-height: 1.65; }

.form__ok, .form__err {
  display: none;
  padding: 15px 18px;
  border-radius: var(--r-s);
  font-size: 0.87rem;
  margin-top: 18px;
  line-height: 1.65;
}

.form__ok {
  border: 1px solid rgba(63, 216, 221, 0.32);
  background: rgba(63, 216, 221, 0.07);
  color: var(--cyan);
}

.form__err {
  border: 1px solid rgba(255, 80, 80, 0.32);
  background: rgba(255, 80, 80, 0.07);
  color: #ff8080;
}

.form__ok.is-on, .form__err.is-on { display: block; }

.map-frame {
  border-radius: var(--r-xl);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--bg-2);
  aspect-ratio: 21 / 8;
  display: grid;
  place-items: center;
  position: relative;
}

.map-frame svg { width: 100%; height: 100%; }

/* ============================================================
   下载中心
   ============================================================ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
  align-items: center;
}

.filter-btn {
  padding: 9px 20px;
  border-radius: 100px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.02);
  color: var(--ink-2);
  font: inherit;
  font-size: 0.86rem;
  cursor: pointer;
  transition: 0.26s var(--ease);
}

.filter-btn:hover { color: var(--ink-0); border-color: var(--line-bright); }

.filter-btn.is-on {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 8px 22px -8px rgba(255, 106, 43, 0.9);
}

.dl-list { display: grid; gap: 14px; }

.dl-item {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, 0.016);
  transition: 0.34s var(--ease);
}

.dl-item:hover {
  border-color: var(--accent-line);
  background: rgba(255, 255, 255, 0.04);
  transform: translateX(4px);
}

.dl-item__icon {
  width: 56px; height: 56px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: var(--bg-2);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ink-2);
  text-transform: uppercase;
  flex-shrink: 0;
}

.dl-item__icon[data-ext="pdf"] { color: #ff8b6b; border-color: rgba(255, 110, 80, 0.32); background: rgba(255, 110, 80, 0.07); }
.dl-item__icon[data-ext="doc"], .dl-item__icon[data-ext="docx"] { color: #7fa8ff; border-color: rgba(100, 150, 255, 0.3); background: rgba(100, 150, 255, 0.07); }
.dl-item__icon[data-ext="xls"], .dl-item__icon[data-ext="xlsx"] { color: #6ddc9a; border-color: rgba(80, 210, 130, 0.3); background: rgba(80, 210, 130, 0.07); }
.dl-item__icon[data-ext="zip"] { color: #d9a86a; border-color: rgba(220, 165, 100, 0.3); background: rgba(220, 165, 100, 0.07); }

.dl-item__body { min-width: 0; }
.dl-item__body h4 { margin-bottom: 6px; font-size: 1rem; }
.dl-item__body p { font-size: 0.85rem; color: var(--ink-3); margin: 0; line-height: 1.6; }

.dl-item__meta {
  display: flex;
  gap: 14px;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-4);
  letter-spacing: 0.06em;
  flex-wrap: wrap;
}

.dl-item__action { flex-shrink: 0; }

.dl-empty {
  padding: 72px 28px;
  text-align: center;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-l);
  color: var(--ink-3);
  font-size: 0.92rem;
}

.dl-empty b { display: block; color: var(--ink-1); margin-bottom: 8px; font-size: 1rem; font-weight: 500; }

/* ============================================================
   视频库
   ============================================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.video-card {
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  overflow: hidden;
  background: var(--bg-1);
  transition: 0.4s var(--ease);
}

.video-card:hover {
  border-color: var(--accent-line);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.video-card__player {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #04060a;
  display: grid;
  place-items: center;
}

.video-card__player video { width: 100%; height: 100%; object-fit: cover; display: block; }

.video-card__play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, rgba(5, 7, 10, 0.15), rgba(5, 7, 10, 0.55));
  cursor: pointer;
  border: 0;
  transition: 0.3s;
}

.video-card__play:hover { background: rgba(5, 7, 10, 0.3); }

.video-card__play i {
  width: 62px; height: 62px;
  border-radius: 50%;
  background: rgba(255, 106, 43, 0.92);
  display: grid;
  place-items: center;
  box-shadow: 0 10px 34px -8px rgba(255, 106, 43, 0.9);
  transition: 0.3s var(--ease);
}

.video-card__play:hover i { transform: scale(1.1); }

.video-card__play svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }

.video-card__body { padding: 22px 24px; }
.video-card__body h4 { margin-bottom: 7px; }
.video-card__body p { font-size: 0.85rem; color: var(--ink-3); margin: 0; line-height: 1.6; }
.video-card__meta {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--ink-4);
  letter-spacing: 0.08em;
}

/* 上传面板 */
.upload-panel {
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: linear-gradient(168deg, rgba(255, 255, 255, 0.042), rgba(255, 255, 255, 0.008));
  padding: clamp(28px, 4vw, 48px);
}

.dropzone {
  border: 1.5px dashed var(--line-bright);
  border-radius: var(--r-m);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: 0.3s var(--ease);
  background: rgba(5, 7, 10, 0.4);
  margin-bottom: 22px;
}

.dropzone:hover, .dropzone.is-drag {
  border-color: var(--accent);
  background: rgba(255, 106, 43, 0.06);
}

.dropzone svg {
  width: 34px; height: 34px;
  color: var(--ink-3);
  margin: 0 auto 14px;
}

.dropzone b { display: block; color: var(--ink-1); font-size: 0.94rem; margin-bottom: 6px; font-weight: 500; }
.dropzone span { font-size: 0.8rem; color: var(--ink-4); }
.dropzone.is-drag svg { color: var(--accent); }

.progress {
  height: 4px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  margin-top: 14px;
  display: none;
}

.progress.is-on { display: block; }

.progress i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--grad-accent);
  transition: width 0.2s;
}

/* ============================================================
   页脚
   ============================================================ */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg-1);
  padding: 84px 0 36px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.25fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line);
}

.footer__brand p {
  font-size: 0.87rem;
  color: var(--ink-3);
  margin-top: 22px;
  max-width: 300px;
  line-height: 1.78;
}

.footer__col h4 {
  font-size: 0.69rem;
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 20px;
  font-weight: 500;
}

.footer__col a,
.footer__col p {
  display: block;
  font-size: 0.88rem;
  color: var(--ink-2);
  margin-bottom: 12px;
  transition: color 0.2s, transform 0.2s;
  line-height: 1.6;
}

.footer__col a:hover { color: var(--accent); transform: translateX(3px); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding-top: 30px;
  flex-wrap: wrap;
}

.footer__bottom p { font-size: 0.78rem; color: var(--ink-4); margin: 0; }

.footer__social { display: flex; gap: 10px; }

.footer__social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--ink-3);
  transition: 0.28s var(--ease);
}

.footer__social a:hover {
  color: var(--accent);
  border-color: var(--accent-line);
  background: var(--accent-dim);
  transform: translateY(-2px);
}

.footer__social svg { width: 15px; height: 15px; }

/* ============================================================
   WhatsApp 悬浮按钮
   右下角固定，绿色品牌色；移动端缩小上移，避让安全区
   ============================================================ */
.wa-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.36), 0 2px 8px rgba(0, 0, 0, 0.12);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
}
.wa-float svg { width: 30px; height: 30px; }
.wa-float:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.46), 0 4px 12px rgba(0, 0, 0, 0.16);
}
.wa-float:focus-visible { outline: 3px solid rgba(37, 211, 102, 0.5); outline-offset: 3px; }

/* 悬停提示：仅桌面端出现，移动端不占空间 */
.wa-float__tip {
  position: absolute;
  right: 64px;
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: var(--ink-1, #1a1a1a);
  color: #fff;
  font-size: 12px;
  line-height: 1;
  padding: 8px 12px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: 0.24s var(--ease);
}
.wa-float:hover .wa-float__tip { opacity: 1; transform: translateY(-50%) translateX(0); }

@media (max-width: 620px) {
  .wa-float {
    width: 50px; height: 50px;
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }
  .wa-float svg { width: 26px; height: 26px; }
  .wa-float__tip { display: none; }
}
/* RTL 语言（阿拉伯语/乌尔都语）镜像到左下角，避免压住阅读起点 */
body.is-rtl .wa-float { right: auto; left: 24px; }
body.is-rtl .wa-float__tip { right: auto; left: 64px; }
@media (max-width: 620px) {
  body.is-rtl .wa-float { left: 16px; }
}

/* ============================================================
   语言显示控制
   ============================================================ */
/* 只有当前语言的静态块可见；其余全部隐藏（12 语言通用） */
body.lang-cn .en-only, body.lang-cn .ru-only { display: none !important; }
body.lang-en .cn-only, body.lang-en .ru-only { display: none !important; }
body.lang-ru .cn-only, body.lang-ru .en-only { display: none !important; }

/* 运行时语言（tw/de/ar/ur/ms/vi/th/hi/bn）：cn/en/ru 静态块全部隐藏，由 JS 替换文本 */
body.lang-tw .cn-only, body.lang-tw .en-only, body.lang-tw .ru-only,
body.lang-de .cn-only, body.lang-de .en-only, body.lang-de .ru-only,
body.lang-ar .cn-only, body.lang-ar .en-only, body.lang-ar .ru-only,
body.lang-ur .cn-only, body.lang-ur .en-only, body.lang-ur .ru-only,
body.lang-ms .cn-only, body.lang-ms .en-only, body.lang-ms .ru-only,
body.lang-vi .cn-only, body.lang-vi .en-only, body.lang-vi .ru-only,
body.lang-th .cn-only, body.lang-th .en-only, body.lang-th .ru-only,
body.lang-hi .cn-only, body.lang-hi .en-only, body.lang-hi .ru-only,
body.lang-bn .cn-only, body.lang-bn .en-only, body.lang-bn .ru-only { display: none !important; }

/* 语言切换时避免布局跳动 */
.hero__visual, .prod__media, .split__media { contain: paint; }

/* ============================================================
   入场动画（JS 门控）
   ============================================================ */
html.js [data-rv] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}

html.js [data-rv].is-in { opacity: 1; transform: none; }

html.js [data-rv-d="1"] { transition-delay: 0.09s; }
html.js [data-rv-d="2"] { transition-delay: 0.18s; }
html.js [data-rv-d="3"] { transition-delay: 0.27s; }
html.js [data-rv-d="4"] { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html.js [data-rv] { opacity: 1; transform: none; }
  .marquee { animation: none; }
}

/* 焦点可见性（无障碍） */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.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;
}

/* 跳到主内容 */
.skip-link {
  position: absolute;
  left: 50%;
  top: -100px;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 12px 24px;
  border-radius: 0 0 var(--r-s) var(--r-s);
  z-index: 1000;
  font-size: 0.86rem;
  transition: top 0.3s;
}

.skip-link:focus { top: 0; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
  .nav__links { display: none; }
  .burger { display: block; }
  .nav__right .btn { display: none; }

  .hero__inner { grid-template-columns: 1fr; gap: 56px; }
  .hero { min-height: auto; padding-top: calc(var(--nav-h) + 88px); }
  .hero__visual { max-width: 540px; aspect-ratio: 4 / 3.5; margin: 0 auto; }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }

  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stats-bar__item:nth-child(2) { border-right: 0; }
  .stats-bar__item:nth-child(1),
  .stats-bar__item:nth-child(2) { border-bottom: 1px solid var(--line); }

  .flow { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
  .flow::before { display: none; }

  .split { grid-template-columns: 1fr; gap: 44px; }
  .split--flip .split__media { order: 0; }

  .prod { grid-template-columns: 1fr; }
  .prod:nth-child(even) { direction: ltr; }
  .prod__media { min-height: 280px; border-right: 0; border-bottom: 1px solid var(--line); }

  .contact-grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}

@media (max-width: 760px) {
  :root { --nav-h: 70px; }

  body { font-size: 16px; }

  .brand__sub { display: none; }
  .brand__mark { width: 34px; height: 34px; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  .hero { padding-bottom: 80px; }
  .hero__stats { grid-template-columns: repeat(3, 1fr); }
  .hero__stat { padding-right: 12px; }
  .hero__stat + .hero__stat { padding-left: 14px; }
  .hero__stat b { font-size: 1.5rem; }
  .hero__stat span { font-size: 0.7rem; margin-top: 8px; }
  .hero__actions { margin-bottom: 48px; }
  .hero__actions .btn { flex: 1 1 auto; padding: 14px 22px; }

  .stats-bar { grid-template-columns: 1fr; border-radius: var(--r-l); }
  .stats-bar__item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 32px 26px;
  }
  .stats-bar__item:last-child { border-bottom: 0; }

  .flow { grid-template-columns: 1fr; gap: 32px; }
  .prod__specs { grid-template-columns: 1fr; }
  .prod__body { padding: 28px 24px; }
  .region-list { grid-template-columns: 1fr; }

  .field-row { grid-template-columns: 1fr; gap: 0; }
  .footer__top { grid-template-columns: 1fr; gap: 36px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .cta { padding: 44px 24px; border-radius: var(--r-l); }
  .scroll-hint { display: none; }

  .dl-item {
    grid-template-columns: 46px 1fr;
    gap: 16px;
    padding: 20px;
  }
  .dl-item__icon { width: 46px; height: 46px; font-size: 0.56rem; }
  .dl-item__action { grid-column: 1 / -1; }
  .dl-item__action .btn { width: 100%; }

  .video-grid { grid-template-columns: 1fr; }
  .filter-bar { gap: 8px; }
  .filter-btn { padding: 8px 16px; font-size: 0.82rem; }

  .card { padding: 28px 24px; }
  .cert { aspect-ratio: auto; min-height: 190px; }
}

/* --- 真实产品照片 --- */
.prod__media img.real,
.split__media img.real {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 18px;
}
.card__ph {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 10px;
  margin-bottom: 14px;
  background: #0b1016;
  border: 1px solid var(--line);
}
.card__ph img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.card:hover .card__ph img { transform: scale(1.05); }

/* --- 实拍相册 --- */
.pgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.pgrid__item {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #0b1016;
}
.pgrid__item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.pgrid__item:hover img { transform: scale(1.04); }
.pgrid__item figcaption {
  padding: 10px 12px;
  font-size: 12.5px;
  color: var(--ink-2);
}
@media (max-width: 860px) { .pgrid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .pgrid { grid-template-columns: 1fr; } }

/* --- 证书墙 --- */
.cgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.cgrid__item {
  display: block;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #0b1016;
  text-decoration: none;
}
.cgrid__item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: top;
  display: block;
  transition: transform 0.4s ease;
}
.cgrid__item:hover img { transform: scale(1.03); }
.cgrid__item figcaption { padding: 10px 12px; font-size: 12.5px; color: var(--ink-2); }
@media (max-width: 860px) { .cgrid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .cgrid { grid-template-columns: 1fr; } }

/* --- 产品参数表 --- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 4px;
  font-size: 13px;
  line-height: 1.5;
}
.spec-table caption {
  text-align: left;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding-bottom: 8px;
}
.spec-table th, .spec-table td {
  border: 1px solid var(--line);
  padding: 7px 10px;
  text-align: left;
  vertical-align: top;
}
.spec-table th {
  background: rgba(255, 255, 255, 0.04);
  font-weight: 600;
  white-space: nowrap;
}
.spec-table tr:hover td { background: rgba(255, 255, 255, 0.025); }
.card .spec-table { font-size: 12.5px; }
.card .spec-table th, .card .spec-table td { padding: 6px 8px; }