/* =========================================================================
   小禾灵工 OEM 官网 · 全站样式
   品牌：小禾灵工（禾数科技） 主色：灵工橙
   说明：所有资源均为站内相对路径；无外部字体、无外部脚本依赖。
   ========================================================================= */

/* ------------------------------ 设计令牌 ------------------------------ */
:root {
  --brand: #F4511E;
  --brand-2: #FF8A50;
  --brand-deep: #D93E06;
  --brand-100: #FFE9DD;
  --brand-50: #FFF6F0;
  --grad-brand: linear-gradient(135deg, #FF8A50 0%, #F4511E 58%, #DE3D06 100%);

  --ink: #181B23;
  --ink-2: #3F4654;
  --mut: #707888;
  --line: #ECE5DD;
  --line-2: #F3EDE6;

  --bg: #FFFFFF;
  --warm: #FAF6F1;
  --dark: #15181F;
  --dark-2: #1D222C;
  --dark-line: rgba(255, 255, 255, .10);

  --ok: #12915F;
  --err: #D23B2E;

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 28px;

  --sh-1: 0 1px 2px rgba(24, 27, 35, .05), 0 10px 30px rgba(24, 27, 35, .07);
  --sh-2: 0 2px 6px rgba(24, 27, 35, .06), 0 18px 50px rgba(24, 27, 35, .12);
  --sh-brand: 0 14px 38px rgba(244, 81, 30, .28);

  --w: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ------------------------------ 基础重置 ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select, button { font-size: inherit; color: inherit; }
::selection { background: var(--brand-100); color: var(--brand-deep); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

/* ------------------------------ 排版基元 ------------------------------ */
.container { width: min(var(--w), calc(100% - 48px)); margin-inline: auto; }
.container--narrow { width: min(880px, calc(100% - 48px)); margin-inline: auto; }

.section { padding: 96px 0; }
.section--warm { background: var(--warm); }
.section--dark { background: var(--dark); color: #F4F5F7; }
.section--tight { padding: 72px 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .14em;
  color: var(--brand); background: var(--brand-50);
  border: 1px solid var(--brand-100);
  padding: 6px 14px; border-radius: 999px;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.section--dark .eyebrow { background: rgba(244, 81, 30, .14); border-color: rgba(244, 81, 30, .35); color: #FFB28E; }

.h1 { font-size: clamp(34px, 4.6vw, 56px); line-height: 1.18; font-weight: 800; letter-spacing: .01em; }
.h2 { font-size: clamp(26px, 3vw, 38px); line-height: 1.26; font-weight: 800; letter-spacing: .01em; }
.h3 { font-size: 20px; line-height: 1.4; font-weight: 700; }
.lead { font-size: 17.5px; color: var(--ink-2); }
.mut { color: var(--mut); }
.grad-txt {
  background: var(--grad-brand);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.shead { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.shead .eyebrow { margin-bottom: 18px; }
.shead .h2 { margin-bottom: 14px; }
.shead__sub { color: var(--mut); font-size: 16.5px; }
.section--dark .shead__sub { color: #A7ADB9; }

/* ------------------------------ 按钮与链接 ------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 30px; border-radius: 999px; border: 1px solid transparent;
  font-size: 15.5px; font-weight: 600; line-height: 1; white-space: nowrap;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
}
.btn svg { width: 17px; height: 17px; transition: transform .22s ease; }
.btn:hover svg { transform: translateX(3px); }
.btn--pri { background: var(--grad-brand); color: #fff; box-shadow: var(--sh-brand); }
.btn--pri:hover { transform: translateY(-2px); box-shadow: 0 18px 44px rgba(244, 81, 30, .36); }
.btn--ghost { background: #fff; border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { transform: translateY(-2px); box-shadow: var(--sh-2); }
.btn--onDark { background: rgba(255, 255, 255, .1); border-color: var(--dark-line); color: #fff; }
.btn--onDark:hover { border-color: rgba(255, 255, 255, .4); transform: translateY(-2px); }
.btn--sm { padding: 10px 20px; font-size: 14px; }
.btn--lg { padding: 17px 38px; font-size: 16.5px; }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

.tlink {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--brand); font-weight: 600; font-size: 14.5px;
}
.tlink svg { width: 16px; height: 16px; transition: transform .2s ease; }
.tlink:hover svg { transform: translateX(3px); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 600; color: var(--brand-deep);
  background: var(--brand-50); border: 1px solid var(--brand-100);
  padding: 3px 12px; border-radius: 999px; line-height: 1.7;
}
.chip--gray { color: var(--ink-2); background: var(--warm); border-color: var(--line); }
.chip--dark { color: #FFB28E; background: rgba(244, 81, 30, .12); border-color: rgba(244, 81, 30, .3); }

/* ------------------------------ 顶部导航 ------------------------------ */
.hdr {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(255, 255, 255, .82);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
}
.hdr.is-stuck { border-bottom-color: var(--line-2); box-shadow: 0 8px 30px rgba(24, 27, 35, .06); }
.hdr__in { display: flex; align-items: center; gap: 28px; height: 74px; }

.brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand__mark { width: 38px; height: 38px; filter: drop-shadow(0 4px 10px rgba(228, 92, 28, .30)); }
.brand__mark img { width: 100%; height: 100%; display: block; }
.ftr .brand__mark { filter: none; }
.brand__txt { font-size: 19.5px; font-weight: 800; letter-spacing: .02em; }
.brand__txt i {
  font-style: normal; font-size: 11px; font-weight: 700; letter-spacing: .08em;
  color: var(--brand-deep); background: var(--brand-50); border: 1px solid var(--brand-100);
  border-radius: 6px; padding: 2px 6px; margin-left: 7px; vertical-align: 3px;
}

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative; padding: 9px 13px; border-radius: 10px;
  font-size: 15px; font-weight: 500; color: var(--ink-2);
  transition: color .2s ease, background .2s ease;
}
.nav a:hover { color: var(--brand); background: var(--brand-50); }
.nav a[aria-current="page"] { color: var(--brand-deep); font-weight: 700; }
.nav a[aria-current="page"]::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%);
  bottom: 2px; width: 16px; height: 3px; border-radius: 3px; background: var(--grad-brand);
}

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

.burger {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  border-radius: 11px; background: #fff; padding: 10px 9px; flex-direction: column; justify-content: space-between;
}
.burger span { display: block; height: 2px; border-radius: 2px; background: var(--ink); transition: transform .25s ease, opacity .2s ease; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.mnav {
  position: fixed; inset: 74px 0 auto 0; z-index: 99;
  background: #fff; border-bottom: 1px solid var(--line-2);
  box-shadow: 0 30px 60px rgba(24, 27, 35, .12);
  padding: 10px 24px 26px;
  display: none;
}
.mnav.is-open { display: block; }
.mnav a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 15px 6px; font-size: 16.5px; font-weight: 600; color: var(--ink);
  border-bottom: 1px solid var(--line-2);
}
.mnav a[aria-current="page"] { color: var(--brand); }
.mnav a svg { width: 16px; height: 16px; color: var(--mut); }
.mnav .btn { margin-top: 18px; width: 100%; }

/* ------------------------------ 内页页头 ------------------------------ */
.page-hero {
  position: relative; overflow: hidden;
  padding: 168px 0 84px;
  background:
    radial-gradient(900px 420px at 88% -60px, rgba(244, 81, 30, .12), transparent 62%),
    radial-gradient(700px 380px at -60px 110%, rgba(244, 81, 30, .08), transparent 60%),
    linear-gradient(180deg, #FFF9F4 0%, #FFFFFF 100%);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(24, 27, 35, .10) 1px, transparent 1.4px);
  background-size: 26px 26px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 72%);
  pointer-events: none;
}
.page-hero__in { position: relative; max-width: 780px; }
.page-hero .eyebrow { margin-bottom: 20px; }
.page-hero .h1 { font-size: clamp(30px, 3.8vw, 46px); }
.page-hero__lead { margin-top: 18px; font-size: 17px; color: var(--ink-2); max-width: 640px; }

.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13.5px; color: var(--mut); margin-bottom: 22px; }
.crumbs a:hover { color: var(--brand); }
.crumbs .sep { color: var(--line); }
.crumbs .cur { color: var(--ink-2); font-weight: 600; }

/* ------------------------------ 首页首屏 ------------------------------ */
.hero { position: relative; overflow: hidden; padding: 158px 0 92px; }
.hero__bg { position: absolute; inset: 0; pointer-events: none; }
.hero__bg::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(820px 460px at 84% 6%, rgba(255, 138, 80, .20), transparent 60%),
    radial-gradient(700px 460px at -8% 88%, rgba(244, 81, 30, .10), transparent 62%),
    linear-gradient(180deg, #FFF8F2 0%, #FFFFFF 88%);
}
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(24, 27, 35, .09) 1px, transparent 1.4px);
  background-size: 26px 26px;
  -webkit-mask-image: linear-gradient(115deg, rgba(0,0,0,.5) 18%, transparent 58%);
  mask-image: linear-gradient(115deg, rgba(0,0,0,.5) 18%, transparent 58%);
}
.hero__in {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: 56px; align-items: center;
}
.hero__copy .eyebrow { margin-bottom: 22px; }
.hero__lead { margin-top: 22px; font-size: 17.5px; color: var(--ink-2); max-width: 560px; }
.hero__note { margin-top: 18px; font-size: 13.5px; color: var(--mut); }
.hero__tags { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 30px; }
.hero__tags span { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 600; color: var(--ink-2); }
.hero__tags svg { width: 16px; height: 16px; color: var(--brand); flex-shrink: 0; }

/* 轮播（平台横幅驱动，接口不可用时保留默认首屏） */
.slides { position: relative; min-height: 0; }
.slide { display: none; }
.slide.is-cur { display: block; animation: slideIn .5s ease; }
@keyframes slideIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.slides__dots { display: flex; gap: 8px; margin-top: 26px; }
.slides__dot {
  width: 26px; height: 5px; border-radius: 5px; border: 0; padding: 0;
  background: var(--line); transition: background .25s ease, width .25s ease;
}
.slides__dot.is-on { background: var(--grad-brand); width: 40px; }

/* 首屏右侧视觉 */
.hero__visual { position: relative; }
.mock {
  position: relative; border-radius: var(--r-lg);
  background: #fff; border: 1px solid var(--line-2);
  box-shadow: var(--sh-2); overflow: hidden;
}
.mock > svg { width: 100%; height: auto; }
.mock-cap { margin-top: 14px; text-align: center; font-size: 12.5px; color: var(--mut); }

.float-chip {
  position: absolute; z-index: 2;
  display: flex; align-items: center; gap: 9px;
  background: rgba(255, 255, 255, .92);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border: 1px solid var(--line-2); border-radius: 14px;
  box-shadow: var(--sh-1); padding: 10px 15px;
  font-size: 13px; font-weight: 700; color: var(--ink);
}
.float-chip svg { width: 18px; height: 18px; flex-shrink: 0; }
.float-chip small { display: block; font-size: 11px; font-weight: 500; color: var(--mut); line-height: 1.4; }
.fc-a { top: 26px; right: -18px; animation: floatY 5.2s ease-in-out infinite; }
.fc-b { bottom: 66px; left: -26px; animation: floatY 6s ease-in-out .8s infinite; }
.fc-c { bottom: -22px; right: -8px; animation: floatY 5.6s ease-in-out .4s infinite; }
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* ------------------------------ 数据带 ------------------------------ */
.statband { margin-top: -6px; }
.statband__box {
  background: var(--dark); color: #fff;
  border-radius: var(--r-xl); padding: 46px 40px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
  position: relative; overflow: hidden;
}
.statband__box::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(560px 240px at 90% -20%, rgba(244, 81, 30, .28), transparent 65%);
  pointer-events: none;
}
.stat { position: relative; text-align: center; padding: 6px 10px; }
.stat + .stat::before {
  content: ""; position: absolute; left: 0; top: 14%; height: 72%;
  width: 1px; background: var(--dark-line);
}
.stat__num {
  font-size: clamp(34px, 3.4vw, 46px); font-weight: 800; line-height: 1.1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(120deg, #FFB28E, #FF6A2B);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat__num sup { font-size: .5em; }
.stat__label { margin-top: 8px; font-size: 14px; color: #A7ADB9; }

/* ------------------------------ 特性卡 ------------------------------ */
.grid { display: grid; gap: 24px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }

.fcard {
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg);
  padding: 30px 28px; box-shadow: 0 1px 2px rgba(24,27,35,.03);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.fcard:hover { transform: translateY(-5px); box-shadow: var(--sh-1); border-color: var(--brand-100); }
.fcard__ico {
  width: 48px; height: 48px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-50); border: 1px solid var(--brand-100);
  color: var(--brand); margin-bottom: 18px;
}
.fcard__ico svg { width: 24px; height: 24px; }
.fcard__t { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.fcard__d { font-size: 14.5px; color: var(--mut); line-height: 1.85; }

/* 深色底上的卡片 */
.section--dark .fcard { background: var(--dark-2); border-color: var(--dark-line); }
.section--dark .fcard__ico { background: rgba(244, 81, 30, .13); border-color: rgba(244, 81, 30, .3); color: #FF9668; }
.section--dark .fcard__t { color: #fff; }
.section--dark .fcard__d { color: #A7ADB9; }

/* ------------------------------ 终端卡 ------------------------------ */
.tcard {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg);
  overflow: hidden; box-shadow: 0 1px 2px rgba(24,27,35,.03);
  transition: transform .25s ease, box-shadow .25s ease;
}
.tcard:hover { transform: translateY(-5px); box-shadow: var(--sh-1); }
.tcard__mock {
  position: relative; padding: 24px 24px 0;
  background: linear-gradient(160deg, #FFF3EA 0%, #FDEDE2 100%);
  border-bottom: 1px solid var(--line-2);
}
.tcard__mock svg { width: 100%; height: auto; }
.tcard__b { padding: 22px 24px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.tcard__top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.tcard__t { font-size: 18px; font-weight: 700; }
.tcard__tag { font-size: 12px; font-weight: 700; color: var(--brand-deep); background: var(--brand-50); border: 1px solid var(--brand-100); padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.tcard__d { font-size: 14px; color: var(--mut); line-height: 1.8; }
.tcard__list { margin-top: 4px; display: grid; gap: 8px; }
.tcard__list li { display: flex; gap: 9px; font-size: 13.8px; color: var(--ink-2); line-height: 1.65; }
.tcard__list svg { width: 16px; height: 16px; color: var(--brand); flex-shrink: 0; margin-top: 3px; }

/* ------------------------------ 对比三列 ------------------------------ */
.compare { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.compare__col {
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg);
  padding: 30px 28px; position: relative; display: flex; flex-direction: column;
}
.compare__col.is-hi {
  border: 2px solid var(--brand);
  box-shadow: var(--sh-brand);
  background: linear-gradient(180deg, #FFF8F3 0%, #FFFFFF 46%);
}
.compare__badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--grad-brand); color: #fff; font-size: 12.5px; font-weight: 700;
  padding: 5px 16px; border-radius: 999px; letter-spacing: .06em; white-space: nowrap;
}
.compare__name { font-size: 18px; font-weight: 800; margin-bottom: 4px; }
.compare__sub { font-size: 13px; color: var(--mut); margin-bottom: 18px; }
.compare__num { font-size: 34px; font-weight: 800; letter-spacing: -.01em; line-height: 1.15; font-variant-numeric: tabular-nums; }
.compare__num small { font-size: 14px; font-weight: 600; color: var(--mut); margin-left: 4px; }
.is-hi .compare__num { color: var(--brand-deep); }
.compare__list { margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line); display: grid; gap: 10px; flex: 1; }
.compare__list li { display: flex; gap: 9px; font-size: 14px; color: var(--ink-2); line-height: 1.65; }
.compare__list svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 3px; }
.li-yes svg { color: var(--ok); }
.li-no svg { color: #C4CAD4; }
.is-hi .li-yes svg { color: var(--brand); }

/* ------------------------------ 架构分层 ------------------------------ */
.stack { display: grid; gap: 14px; }
.stack__row {
  display: grid; grid-template-columns: 190px 1fr; gap: 0;
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-md);
  overflow: hidden; transition: transform .22s ease, box-shadow .22s ease;
}
.stack__row:hover { transform: translateX(6px); box-shadow: var(--sh-1); }
.stack__side {
  display: flex; flex-direction: column; justify-content: center; gap: 3px;
  padding: 20px 22px; color: #fff;
  background: linear-gradient(150deg, #2A2F3B, #1B1F29);
}
.stack__row:nth-child(odd) .stack__side { background: linear-gradient(150deg, #33281f, #1d1a17); }
.stack__row.stack__row--hot .stack__side { background: var(--grad-brand); }
.stack__name { font-size: 16.5px; font-weight: 800; line-height: 1.4; }
.stack__desc { font-size: 12.5px; opacity: .72; }
.stack__body { padding: 16px 22px; display: flex; flex-wrap: wrap; gap: 9px; align-content: center; }
.stack__chips { display: inline-flex; align-items: center; font-size: 13px; font-weight: 600; color: var(--ink-2); background: var(--warm); border: 1px solid var(--line-2); border-radius: 8px; padding: 6px 13px; }
.stack__arrow { grid-column: 1 / -1; text-align: center; color: #C9BFB4; font-size: 15px; line-height: 1; margin: -6px 0; }

/* ------------------------------ 中台卡 ------------------------------ */
.zcard {
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg);
  padding: 30px 28px; position: relative; overflow: hidden;
}
.zcard::after {
  content: ""; position: absolute; right: -40px; top: -40px; width: 130px; height: 130px;
  border-radius: 50%; background: radial-gradient(circle, rgba(244, 81, 30, .1), transparent 70%);
}
.zcard__no { font-size: 13px; font-weight: 800; letter-spacing: .12em; color: var(--brand); margin-bottom: 10px; }
.zcard__t { font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.zcard__d { font-size: 14px; color: var(--mut); margin-bottom: 16px; }
.zcard__list { display: flex; flex-wrap: wrap; gap: 8px; }
.zcard__list span { font-size: 12.8px; font-weight: 600; color: var(--ink-2); background: var(--warm); border: 1px solid var(--line-2); border-radius: 8px; padding: 5px 11px; }

/* ------------------------------ 交付流程 ------------------------------ */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; position: relative; }
.step {
  position: relative; background: #fff; border: 1px solid var(--line-2);
  border-radius: var(--r-lg); padding: 34px 30px 30px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.step:hover { transform: translateY(-5px); box-shadow: var(--sh-1); }
.step__no {
  width: 52px; height: 52px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--grad-brand); color: #fff;
  font-size: 21px; font-weight: 800; margin-bottom: 20px;
  box-shadow: var(--sh-brand); font-variant-numeric: tabular-nums;
}
.step__t { font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.step__d { font-size: 14.5px; color: var(--mut); line-height: 1.85; }
.step__d b { color: var(--ink-2); font-weight: 700; }
.step:not(:last-child)::after {
  content: ""; position: absolute; top: 58px; right: -27px; width: 28px; height: 2px;
  background-image: linear-gradient(90deg, var(--brand) 55%, transparent 0);
  background-size: 9px 2px;
}

.ribbon {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  margin-top: 34px; padding: 15px 22px;
  background: var(--brand-50); border: 1px dashed var(--brand-100);
  border-radius: var(--r-md); color: var(--brand-deep); font-size: 14.5px; font-weight: 600;
}
.ribbon svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ------------------------------ 合作模式 ------------------------------ */
.mode {
  position: relative; background: #fff; border: 1px solid var(--line-2);
  border-radius: var(--r-xl); padding: 36px 34px; overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease;
}
.mode:hover { transform: translateY(-5px); box-shadow: var(--sh-1); }
.mode::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 130px;
  background: radial-gradient(420px 160px at 20% -40px, rgba(244, 81, 30, .12), transparent 70%);
  pointer-events: none;
}
.mode__tag { margin-bottom: 16px; }
.mode__t { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.mode__en { font-size: 12.5px; letter-spacing: .14em; color: var(--mut); font-weight: 600; margin-bottom: 18px; }
.mode__d { font-size: 14.5px; color: var(--ink-2); margin-bottom: 20px; }
.mode__list { display: grid; gap: 11px; margin-bottom: 24px; }
.mode__list li { display: flex; gap: 10px; font-size: 14.3px; color: var(--ink-2); line-height: 1.7; }
.mode__list svg { width: 17px; height: 17px; color: var(--brand); flex-shrink: 0; margin-top: 3px; }
.mode__fit { font-size: 13px; color: var(--mut); border-top: 1px dashed var(--line); padding-top: 16px; }
.mode__fit b { color: var(--ink-2); }
.mode--hi { border: 2px solid var(--brand); box-shadow: var(--sh-brand); }

/* ------------------------------ 成本对比 ------------------------------ */
.costgrid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 46px; align-items: center; }
.costviz { display: grid; gap: 22px; }
.costviz__row { display: grid; gap: 9px; }
.costviz__meta { display: flex; justify-content: space-between; align-items: baseline; font-size: 14.5px; font-weight: 700; }
.costviz__meta span:last-child { font-size: 19px; font-weight: 800; color: var(--ink); font-variant-numeric: tabular-nums; }
.costviz__bar { height: 26px; border-radius: 8px; background: var(--warm); border: 1px solid var(--line-2); overflow: hidden; }
.costviz__fill { height: 100%; border-radius: 8px; background: linear-gradient(90deg, #FFB28E, #F4511E); }
.costviz__fill--lite { background: linear-gradient(90deg, #FFD9C4, #FF9A66); }
.costviz__note { font-size: 12.5px; color: var(--mut); }

.riskcard {
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg);
  padding: 26px 24px; height: 100%;
  transition: transform .25s ease, box-shadow .25s ease;
}
.riskcard:hover { transform: translateY(-4px); box-shadow: var(--sh-1); }
.riskcard__ico {
  width: 44px; height: 44px; border-radius: 12px; margin-bottom: 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-50); border: 1px solid var(--brand-100); color: var(--brand);
}
.riskcard__ico svg { width: 22px; height: 22px; }
.riskcard__t { font-size: 16.5px; font-weight: 800; margin-bottom: 6px; }
.riskcard__d { font-size: 13.8px; color: var(--mut); line-height: 1.8; }

/* ------------------------------ 生态 chips ------------------------------ */
.eco {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.eco__it {
  display: flex; align-items: flex-start; gap: 13px;
  background: var(--dark-2); border: 1px solid var(--dark-line);
  border-radius: var(--r-md); padding: 20px;
  transition: border-color .22s ease, transform .22s ease;
}
.eco__it:hover { border-color: rgba(244, 81, 30, .45); transform: translateY(-3px); }
.eco__ico {
  width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(244, 81, 30, .14); color: #FF9668;
}
.eco__ico svg { width: 20px; height: 20px; }
.eco__t { font-size: 15px; font-weight: 700; color: #fff; line-height: 1.5; }
.eco__d { font-size: 12.5px; color: #8B92A0; line-height: 1.6; margin-top: 3px; }

/* ------------------------------ 资讯 / 案例卡片 ------------------------------ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg);
  overflow: hidden; box-shadow: 0 1px 2px rgba(24,27,35,.03);
  transition: transform .25s ease, box-shadow .25s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--sh-1); }
.card__ph {
  height: 158px; position: relative;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255, 255, 255, .92);
  background: linear-gradient(135deg, #FF9A66 0%, #F4511E 100%);
}
.card__ph--b { background: linear-gradient(135deg, #FFB28E 0%, #E8430C 100%); }
.card__ph--c { background: linear-gradient(135deg, #FFC9A8 0%, #D93E06 100%); }
.card__ph--d { background: linear-gradient(160deg, #2A2F3B 0%, #15181F 100%); }
.card__ph svg { width: 44px; height: 44px; opacity: .9; }
.card__ph img { width: 100%; height: 100%; object-fit: cover; }
.card__b { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.card__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 12.8px; color: var(--mut); }
.card__t { font-size: 16.5px; font-weight: 700; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card__s { font-size: 13.8px; color: var(--mut); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card__f { margin-top: auto; padding-top: 12px; display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--mut); }

.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.filter {
  border: 1px solid var(--line); background: #fff; color: var(--ink-2);
  border-radius: 999px; padding: 8px 18px; font-size: 14px; font-weight: 600;
  transition: all .2s ease;
}
.filter:hover { border-color: var(--brand); color: var(--brand); }
.filter.is-on { background: var(--grad-brand); border-color: transparent; color: #fff; box-shadow: 0 6px 16px rgba(244, 81, 30, .3); }

.pager { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 40px; }
.pager__info { font-size: 13.5px; color: var(--mut); }

.skel {
  height: 240px; border-radius: var(--r-lg);
  background: linear-gradient(100deg, var(--warm) 40%, #FFF 50%, var(--warm) 60%);
  background-size: 200% 100%; animation: shimmer 1.3s infinite linear;
}
@keyframes shimmer { from { background-position: 130% 0; } to { background-position: -70% 0; } }

.empty {
  padding: 60px 30px; text-align: center; color: var(--mut); font-size: 15px;
  background: var(--warm); border: 1px dashed var(--line); border-radius: var(--r-lg);
}
.empty a { color: var(--brand); font-weight: 600; }

/* 详情页文章 */
.article { background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg); padding: 44px 48px; box-shadow: 0 1px 2px rgba(24,27,35,.03); }
.article__body { margin-top: 26px; padding-top: 26px; border-top: 1px solid var(--line-2); font-size: 15.5px; line-height: 2.05; color: var(--ink-2); word-break: break-word; }
.article__foot { margin-top: 34px; }

/* ------------------------------ FAQ ------------------------------ */
.faq { display: grid; gap: 14px; max-width: 880px; margin-inline: auto; }
.faq__it {
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-md);
  overflow: hidden; transition: border-color .2s ease, box-shadow .2s ease;
}
.faq__it.is-open { border-color: var(--brand-100); box-shadow: var(--sh-1); }
.faq__q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px;
  background: none; border: 0; text-align: left;
  padding: 21px 24px; font-size: 16px; font-weight: 700; color: var(--ink); line-height: 1.6;
}
.faq__q .ico {
  width: 30px; height: 30px; flex-shrink: 0; border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-50); color: var(--brand);
  transition: transform .25s ease, background .25s ease, color .25s ease;
}
.faq__q .ico svg { width: 16px; height: 16px; }
.faq__it.is-open .faq__q .ico { transform: rotate(45deg); background: var(--grad-brand); color: #fff; }
.faq__a { display: none; padding: 0 24px 24px; font-size: 14.6px; color: var(--ink-2); line-height: 1.95; }
.faq__it.is-open .faq__a { display: block; animation: slideIn .3s ease; }

/* ------------------------------ 关于页 ------------------------------ */
.quote {
  position: relative; max-width: 860px; margin-inline: auto; text-align: center;
  padding: 52px 56px; background: var(--dark); color: #fff;
  border-radius: var(--r-xl); overflow: hidden;
}
.quote::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(480px 220px at 85% -10%, rgba(244, 81, 30, .3), transparent 65%);
}
.quote__mark { position: relative; font-size: 44px; font-weight: 800; line-height: .6; color: var(--brand-2); margin-bottom: 22px; font-family: Georgia, serif; }
.quote__txt { position: relative; font-size: clamp(19px, 2.2vw, 24px); font-weight: 700; line-height: 1.8; }
.quote__txt b { color: #FF9668; }
.quote__sub { position: relative; margin-top: 16px; font-size: 14px; color: #A7ADB9; }

.dd { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.dd__card { background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg); padding: 32px 30px; }
.dd__head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.dd__ico { width: 42px; height: 42px; border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.dd__ico svg { width: 21px; height: 21px; }
.dd__card--yes .dd__ico { background: var(--brand-50); border: 1px solid var(--brand-100); color: var(--brand); }
.dd__card--no .dd__ico { background: var(--warm); border: 1px solid var(--line); color: var(--mut); }
.dd__t { font-size: 18px; font-weight: 800; }
.dd__list { display: grid; gap: 12px; }
.dd__list li { display: flex; gap: 10px; font-size: 14.5px; color: var(--ink-2); line-height: 1.75; }
.dd__list svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 4px; }
.dd__card--yes .dd__list svg { color: var(--brand); }
.dd__card--no .dd__list svg { color: #B9BFCA; }

/* ------------------------------ 联系页 ------------------------------ */
.contact-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 30px; align-items: start; }
.form-card { background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-xl); padding: 40px; box-shadow: var(--sh-1); }
.form-card__t { font-size: 21px; font-weight: 800; margin-bottom: 6px; }
.form-card__d { font-size: 14px; color: var(--mut); margin-bottom: 28px; }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 8px; margin-bottom: 18px; }
.field label { font-size: 14px; font-weight: 700; }
.field label em { color: var(--brand); font-style: normal; margin-left: 2px; }
.field .input, .field textarea, .field select {
  width: 100%; border: 1.5px solid var(--line); border-radius: 12px;
  padding: 13px 16px; font-size: 15px; background: #FCFBFA;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.field textarea { min-height: 116px; resize: vertical; }
.field .input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--brand); background: #fff;
  box-shadow: 0 0 0 4px rgba(244, 81, 30, .12);
}
.field ::placeholder { color: #A8AEBB; }
.msg { display: none; margin-top: 16px; padding: 13px 18px; border-radius: 12px; font-size: 14.5px; font-weight: 600; }
.msg.is-on { display: block; animation: slideIn .3s ease; }
.msg--ok { background: #E9F7F0; color: var(--ok); border: 1px solid #C4E9D8; }
.msg--err { background: #FDEEEC; color: var(--err); border: 1px solid #F6D3CE; }

.side-card {
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r-lg);
  padding: 30px; box-shadow: 0 1px 2px rgba(24,27,35,.03);
}
.side-card + .side-card { margin-top: 22px; }
.side-card__t { font-size: 17px; font-weight: 800; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.side-card__t svg { width: 20px; height: 20px; color: var(--brand); }
.cinfo { display: grid; gap: 16px; }
.cinfo__it { display: flex; gap: 13px; align-items: flex-start; }
.cinfo__ico {
  width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-50); border: 1px solid var(--brand-100); color: var(--brand);
}
.cinfo__ico svg { width: 19px; height: 19px; }
.cinfo__l { font-size: 12.5px; color: var(--mut); margin-bottom: 2px; }
.cinfo__v { font-size: 15px; font-weight: 700; line-height: 1.6; word-break: break-all; }
.cinfo__v a:hover { color: var(--brand); }

/* ------------------------------ CTA 带 ------------------------------ */
.cta-band {
  position: relative; overflow: hidden;
  background: var(--grad-brand); color: #fff;
  border-radius: var(--r-xl); padding: 62px 56px;
  display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(500px 240px at 8% -30%, rgba(255, 255, 255, .22), transparent 60%),
    radial-gradient(420px 220px at 96% 120%, rgba(120, 32, 0, .28), transparent 65%);
  pointer-events: none;
}
.cta-band__t { position: relative; font-size: clamp(23px, 2.6vw, 31px); font-weight: 800; line-height: 1.4; }
.cta-band__d { position: relative; margin-top: 10px; font-size: 15.5px; opacity: .92; }
.cta-band__act { position: relative; display: flex; gap: 14px; flex-wrap: wrap; }
.cta-band .btn--white { background: #fff; color: var(--brand-deep); }
.cta-band .btn--white:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(120, 32, 0, .35); }
.cta-band .btn--line { border-color: rgba(255, 255, 255, .55); color: #fff; background: transparent; }
.cta-band .btn--line:hover { border-color: #fff; transform: translateY(-2px); }

/* ------------------------------ 页脚 ------------------------------ */
.ftr { background: var(--dark); color: #B9BFCB; margin-top: 96px; }
.ftr__grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 44px;
  padding: 68px 0 52px;
}
.ftr .brand__txt { color: #fff; }
.ftr__brand p { margin-top: 18px; font-size: 13.8px; line-height: 1.9; color: #8B92A0; max-width: 320px; }
.ftr h3 { font-size: 14px; font-weight: 700; color: #fff; letter-spacing: .06em; margin-bottom: 18px; }
.ftr nav { display: grid; gap: 11px; align-content: start; }
.ftr nav a { font-size: 14px; color: #9AA1AF; transition: color .2s ease; width: fit-content; }
.ftr nav a:hover { color: #FF9668; }
.ftr__contact { display: grid; gap: 13px; align-content: start; font-size: 13.8px; }
.ftr__contact b { color: #E8EAEE; font-weight: 600; }
.ftr__contact a:hover { color: #FF9668; }
.ftr__bar {
  border-top: 1px solid var(--dark-line);
  padding: 22px 0 26px;
  display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: center; justify-content: space-between;
  font-size: 13px; color: #7A8194;
}
.ftr__bar a { color: #9AA1AF; }
.ftr__bar a:hover { color: #FF9668; }

/* ------------------------------ 悬浮与动效 ------------------------------ */
.totop {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 14px; border: 0;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(14px); pointer-events: none;
  transition: opacity .25s ease, transform .25s ease, background .2s ease;
  box-shadow: var(--sh-2);
}
.totop.is-on { opacity: 1; transform: none; pointer-events: auto; }
.totop:hover { background: var(--brand); }
.totop svg { width: 19px; height: 19px; }

[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; transition-delay: var(--rd, 0s); }
[data-reveal].revealed { opacity: 1; transform: none; }

/* ------------------------------ 响应式 ------------------------------ */
@media (max-width: 1080px) {
  .hero__in { grid-template-columns: 1fr; gap: 48px; }
  .hero__visual { max-width: 640px; }
  .fc-a { right: 6px; }
  .fc-b { left: -8px; }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .eco { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .statband__box { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
  .stat:nth-child(3)::before { display: none; }
  .contact-grid, .costgrid { grid-template-columns: 1fr; }
  .ftr__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 860px) {
  .section { padding: 72px 0; }
  .nav { display: none; }
  .burger { display: flex; }
  .hdr__cta .btn { display: none; }
  .steps { grid-template-columns: 1fr; }
  .step:not(:last-child)::after { display: none; }
  .compare { grid-template-columns: 1fr; }
  .compare__col.is-hi { order: -1; }
  .article { padding: 30px 24px; }
  .cta-band { grid-template-columns: 1fr; padding: 46px 34px; }
  .frow { grid-template-columns: 1fr; }
  .dd { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .container { width: calc(100% - 36px); }
  .hero { padding: 128px 0 68px; }
  .page-hero { padding: 132px 0 60px; }
  .g-2, .g-3, .g-4, .cards, .eco { grid-template-columns: 1fr; }
  .statband__box { grid-template-columns: 1fr 1fr; padding: 36px 24px; }
  .stat + .stat::before { display: none; }
  .stack__row { grid-template-columns: 1fr; }
  .stack__side { padding: 16px 20px; }
  .float-chip { display: none; }
  .ftr__grid { grid-template-columns: 1fr; gap: 30px; padding: 52px 0 40px; }
  .form-card { padding: 28px 22px; }
  .quote { padding: 40px 26px; }
  .hero__tags { gap: 9px 16px; }
}

/* ------------------------------ 减弱动效 ------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}