/* ============================================================
   毛小豆 · 解决方案服务商官网 — 共享设计系统
   供 index.html 与 solutions/*.html 统一引用。
   页面特有样式（Banner 面板、装饰图）在各页 <style> 内补充。
   ============================================================ */

:root {
  color-scheme: light;

  --brand-900: #05182E;
  --brand-800: #0A2748;
  --brand-700: #0E3C86;
  --brand-600: #1358C8;
  --brand-500: #2E86FF;
  --brand-050: #EAF2FE;

  --ground: #F5F8FC;
  --surface: #FFFFFF;
  --surface-alt: #EEF3F9;
  --line: #E1E8F0;
  --line-strong: #C6D3E1;

  --ink: #14202B;
  --ink-soft: #566676;
  --ink-faint: #8494A2;
  --on-brand: #FFFFFF;
  --on-brand-soft: rgba(255, 255, 255, 0.78);

  --ok: #1F9254;
  --warn: #C8871B;
  --idle: #8FA1B0;

  --screen: #0E2033;
  --screen-dim: #24384C;

  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;

  --shadow-sm: 0 1px 2px rgba(11, 45, 100, .06), 0 2px 8px rgba(11, 45, 100, .05);
  --shadow-md: 0 4px 14px rgba(11, 45, 100, .09), 0 10px 34px rgba(11, 45, 100, .08);
  --shadow-lg: 0 10px 28px rgba(11, 45, 100, .13), 0 24px 60px rgba(11, 45, 100, .12);

  /* 横幅 / CTA 区（亮主题） */
  --stage-1: #F4F9FF;
  --stage-2: #E4EFFC;
  --stage-glow: rgba(46, 134, 255, .16);
  --stage-grid: rgba(19, 88, 200, .07);
  --on-stage: #14202B;
  --on-stage-soft: #4C5E70;
  --on-stage-faint: #7C8DA0;
  --stage-line: rgba(19, 88, 200, .22);
  --stage-fig: .13;

  --shell: 1280px;
  --gutter: clamp(18px, 4vw, 48px);
}

/* 默认锁定亮色；如需暗色，在 <html> 上显式设置 data-theme="dark" */

:root[data-theme="light"] {
  color-scheme: light;
  --ground: #F5F8FC; --surface: #FFFFFF; --surface-alt: #EEF3F9;
  --line: #E1E8F0; --line-strong: #C6D3E1;
  --ink: #14202B; --ink-soft: #566676; --ink-faint: #8494A2;
  --brand-600: #1358C8; --brand-500: #2E86FF; --brand-050: #EAF2FE;
  --screen: #0E2033; --screen-dim: #24384C;
  --shadow-sm: 0 1px 2px rgba(11, 45, 100, .06), 0 2px 8px rgba(11, 45, 100, .05);
  --shadow-md: 0 4px 14px rgba(11, 45, 100, .09), 0 10px 34px rgba(11, 45, 100, .08);
  --shadow-lg: 0 10px 28px rgba(11, 45, 100, .13), 0 24px 60px rgba(11, 45, 100, .12);
  --stage-1: #F4F9FF; --stage-2: #E4EFFC; --stage-glow: rgba(46, 134, 255, .16);
  --stage-grid: rgba(19, 88, 200, .07);
  --on-stage: #14202B; --on-stage-soft: #4C5E70; --on-stage-faint: #7C8DA0;
  --stage-line: rgba(19, 88, 200, .22); --stage-fig: .13;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ground: #0A1119; --surface: #121C26; --surface-alt: #16222E;
  --line: #22303D; --line-strong: #34475A;
  --ink: #E6EDF4; --ink-soft: #9FB1C0; --ink-faint: #7A8C9C;
  --brand-600: #4A90FF; --brand-500: #6BA6FF; --brand-050: rgba(74, 144, 255, 0.14);
  --screen: #081420; --screen-dim: #1A2938;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .3), 0 2px 8px rgba(0, 0, 0, .25);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, .35), 0 10px 34px rgba(0, 0, 0, .3);
  --shadow-lg: 0 10px 28px rgba(0, 0, 0, .42), 0 24px 60px rgba(0, 0, 0, .38);
  --stage-1: #05182E; --stage-2: #0E3C86; --stage-glow: rgba(46, 134, 255, .38);
  --stage-grid: rgba(255, 255, 255, .05);
  --on-stage: #FFFFFF; --on-stage-soft: rgba(255, 255, 255, .78); --on-stage-faint: rgba(255, 255, 255, .55);
  --stage-line: rgba(255, 255, 255, .3); --stage-fig: .26;
}

/* ============ 方案配色：在 <html> 上设置 data-solution 覆盖品牌色 ============ */
/* 各色族与默认品牌蓝同明度，保证组件观感一致 */

:root[data-solution="cs"] {        /* AI 智能客服 · 青 */
  --brand-700: #0B5B74; --brand-600: #0E6E8C; --brand-500: #14A3C7; --brand-050: #E6F5FA;
  --stage-grid: rgba(14, 110, 140, .07); --stage-line: rgba(14, 110, 140, .22); --stage-glow: rgba(20, 163, 199, .16);
}
:root[data-solution="workflow"] {  /* 企业工作流 · 紫 */
  --brand-700: #4635A0; --brand-600: #5B47C4; --brand-500: #8A6DFF; --brand-050: #F0EDFC;
  --stage-grid: rgba(91, 71, 196, .07); --stage-line: rgba(91, 71, 196, .22); --stage-glow: rgba(138, 109, 255, .16);
}
:root[data-solution="knowledge"] { /* 企业知识库 · 绿 */
  --brand-700: #0B5C46; --brand-600: #0F7D5E; --brand-500: #22B385; --brand-050: #E7F6F0;
  --stage-grid: rgba(15, 125, 94, .07); --stage-line: rgba(15, 125, 94, .22); --stage-glow: rgba(34, 179, 133, .16);
}
:root[data-solution="ecommerce"] { /* 跨境电商 · 橙 */
  --brand-700: #96470B; --brand-600: #C25E10; --brand-500: #F08C2E; --brand-050: #FCF1E4;
  --stage-grid: rgba(194, 94, 16, .07); --stage-line: rgba(194, 94, 16, .22); --stage-glow: rgba(240, 140, 46, .16);
}
:root[data-solution="matrix"] {    /* 混剪·短剧·AI 矩阵 · 玫红 */
  --brand-700: #8C2D6E; --brand-600: #B03A8C; --brand-500: #D95FB4; --brand-050: #FAEBF5;
  --stage-grid: rgba(176, 58, 140, .07); --stage-line: rgba(176, 58, 140, .22); --stage-glow: rgba(217, 95, 180, .16);
}
:root[data-solution="live"] {      /* AI 直播 · 红 */
  --brand-700: #971E38; --brand-600: #C22847; --brand-500: #F0506E; --brand-050: #FCE9ED;
  --stage-grid: rgba(194, 40, 71, .07); --stage-line: rgba(194, 40, 71, .22); --stage-glow: rgba(240, 80, 110, .16);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

:focus-visible { outline: 2px solid var(--brand-500); outline-offset: 3px; }

h1, h2, h3, h4 { margin: 0; text-wrap: balance; }
p { margin: 0; }

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

/* ================= 顶栏 ================= */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
  flex: none;
}

.logo__mark {
  width: 30px;
  height: 22px;
  border-radius: 5px;
  background: linear-gradient(135deg, #1358C8, #2E86FF);
  position: relative;
  flex: none;
  box-shadow: 0 3px 10px rgba(19, 88, 200, .4);
}

.logo__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -5px;
  width: 10px;
  height: 4px;
  transform: translateX(-50%);
  border-radius: 0 0 3px 3px;
  background: #1358C8;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 40px);
  margin-inline: auto;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink-soft);
}

.nav__menu > a:hover,
.nav__drop:hover > a { color: var(--brand-600); }

/* 顶栏下拉（解决方案菜单） */
.nav__drop { position: relative; }

.nav__drop > a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.nav__drop > a::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform .18s ease;
}

.nav__drop:hover > a::after,
.nav__drop:focus-within > a::after { transform: rotate(225deg) translateY(-2px); }

.nav__drop-panel {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  width: 560px;
  padding: 10px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}

.nav__drop:hover .nav__drop-panel,
.nav__drop:focus-within .nav__drop-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav__drop-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  color: var(--ink);
}

.nav__drop-item:hover { background: var(--brand-050); }

.nav__drop-item i {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex: none;
  background: var(--dot, var(--brand-600));
}

.nav__drop-item b { display: block; font-size: 14.5px; font-weight: 600; line-height: 1.4; }
.nav__drop-item span { display: block; font-size: 12.5px; color: var(--ink-faint); line-height: 1.4; }

.nav__side {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: none;
}

.hotline {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  text-align: right;
}

.hotline span {
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: .1em;
}

.hotline strong {
  font-family: var(--mono);
  font-size: 17px;
  color: var(--brand-600);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 1080px) { .nav__menu { display: none; } .nav__inner { justify-content: space-between; } }
@media (max-width: 620px) { .hotline { display: none; } }

/* ================= 按钮 ================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding-inline: 28px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  font-size: 15.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--main { background: linear-gradient(135deg, var(--brand-600), var(--brand-500)); color: #FFFFFF; box-shadow: 0 4px 14px color-mix(in srgb, var(--brand-600) 35%, transparent); }
.btn--main:hover { box-shadow: 0 8px 22px color-mix(in srgb, var(--brand-600) 45%, transparent); }

.btn--line-light { border-color: rgba(255, 255, 255, .45); color: #FFFFFF; }
.btn--line-light:hover { background: rgba(255, 255, 255, .12); border-color: #FFFFFF; }

.btn--line-ink { border-color: var(--line-strong); color: var(--on-stage); background: color-mix(in srgb, var(--surface) 55%, transparent); }
.btn--line-ink:hover { border-color: var(--brand-500); color: var(--brand-600); background: var(--brand-050); }

.btn--white { background: #FFFFFF; color: var(--brand-700); box-shadow: 0 6px 18px rgba(3, 18, 38, .28); }
.btn--white:hover { background: var(--brand-050); box-shadow: 0 10px 26px rgba(3, 18, 38, .34); }

.btn--sm { height: 38px; padding-inline: 18px; font-size: 14px; }

.btn__tag { font-family: var(--mono); font-size: 11px; font-weight: 400; opacity: .8; }

/* ================= Banner ================= */

.banner {
  position: relative;
  background:
    radial-gradient(120% 90% at 85% 8%, var(--stage-glow) 0%, transparent 55%),
    linear-gradient(118deg, var(--stage-1) 0%, var(--stage-2) 100%);
  color: var(--on-stage);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

/* 实拍/装饰背景层（可选）：压低存在感融进浅色渐变里 */
.banner__bg {
  position: absolute;
  inset: 0;
  background: url("hero-city.jpg") center 30% / cover no-repeat;
  opacity: var(--stage-fig);
  pointer-events: none;
}

.banner__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, var(--stage-1) 0%, transparent 58%, transparent 100%);
}

/* 网格纹理：科技底纹 */
.banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--stage-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--stage-grid) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: linear-gradient(105deg, #000 0%, transparent 72%);
  -webkit-mask-image: linear-gradient(105deg, #000 0%, transparent 72%);
  pointer-events: none;
}

.banner__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 520px);
  gap: clamp(30px, 5vw, 70px);
  align-items: center;
  padding-block: clamp(56px, 8vw, 104px);
}

/* 方案页 Banner 稍紧凑 */
.banner--sol .banner__inner { padding-block: clamp(44px, 6vw, 80px); }

@media (max-width: 940px) { .banner__inner { grid-template-columns: minmax(0, 1fr); } }

.banner__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border: 1px solid var(--stage-line);
  border-radius: 999px;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--on-stage-soft);
  margin-bottom: 26px;
  background: color-mix(in srgb, var(--surface) 62%, transparent);
  backdrop-filter: blur(4px);
}

.banner__eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3FB27F;
  box-shadow: 0 0 0 0 rgba(63, 178, 127, .55);
  animation: pulse 2.4s ease-out infinite;
  flex: none;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(63, 178, 127, .55); }
  70% { box-shadow: 0 0 0 9px rgba(63, 178, 127, 0); }
  100% { box-shadow: 0 0 0 0 rgba(63, 178, 127, 0); }
}

.banner h1 {
  font-size: clamp(32px, 4.6vw, 56px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.banner--sol h1 { font-size: clamp(30px, 4vw, 46px); }

.banner h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--brand-700) 0%, var(--brand-500) 60%, #2FBF8F 135%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.banner__sub {
  margin-top: 22px;
  max-width: 34em;
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--on-stage-soft);
  line-height: 1.9;
}

.banner__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.banner__foot {
  margin-top: 26px;
  font-size: 13px;
  color: var(--on-stage-faint);
  font-family: var(--mono);
}

/* 深色演示面板（Banner 右侧） */
.panel {
  background: rgba(7, 20, 36, .92);
  border: 1px solid rgba(14, 32, 51, .35);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: 0 22px 60px rgba(11, 45, 100, .28), 0 4px 16px rgba(11, 45, 100, .18);
}

.panel__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .62);
}

.panel__canvas { display: block; width: 100%; height: auto; }

.panel__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  padding: 12px 16px;
  border-top: 1px solid rgba(255, 255, 255, .14);
  font-size: 12px;
  color: rgba(255, 255, 255, .72);
}

.lg { display: inline-flex; align-items: center; gap: 7px; }
.lg i { width: 8px; height: 8px; border-radius: 2px; display: block; }

/* ================= 面包屑（方案页） ================= */

.crumb {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.crumb__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-block: 12px;
  font-size: 13.5px;
  color: var(--ink-faint);
}

.crumb a:hover { color: var(--brand-600); }
.crumb b { color: var(--ink-soft); font-weight: 500; }

/* ================= 数据条 ================= */

.figures { background: var(--surface); border-bottom: 1px solid var(--line); }

.figures__inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding-block: clamp(28px, 4vw, 44px);
}

@media (max-width: 780px) { .figures__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 26px; } }

.figure { text-align: center; padding-inline: 12px; }
.figure + .figure { border-left: 1px solid var(--line); }
@media (max-width: 780px) { .figure:nth-child(odd) { border-left: 0; } }

.figure b {
  display: block;
  font-family: var(--mono);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  background: linear-gradient(120deg, var(--brand-600), var(--brand-500));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.figure span { display: block; margin-top: 6px; font-size: 14px; color: var(--ink-soft); }

/* ================= 分区 ================= */

.sec { padding-block: clamp(56px, 7.5vw, 96px); }
.sec--alt { background: var(--surface); border-block: 1px solid var(--line); }

.sec-head { text-align: center; margin-bottom: clamp(34px, 4.5vw, 56px); }

.sec-head .en {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--brand-600);
  margin-bottom: 10px;
}

.sec-head h2 {
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.sec-head hr {
  width: 44px;
  height: 3px;
  border: 0;
  background: var(--brand-600);
  margin: 18px auto 0;
}

.sec-head p {
  max-width: 44em;
  margin: 16px auto 0;
  color: var(--ink-soft);
  font-size: 15.5px;
}

/* ================= 能力宫格 ================= */

.feat {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

@media (max-width: 1000px) { .feat { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .feat { grid-template-columns: minmax(0, 1fr); } }

.feat__cell {
  background: var(--surface);
  padding: clamp(24px, 3vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background-color .2s ease;
}

.sec--alt .feat__cell { background: var(--ground); }
.feat__cell:hover { background: var(--brand-050); }

.feat__icon {
  width: 52px;
  height: 52px;
  padding: 12px;
  border-radius: var(--r-sm);
  color: var(--brand-600);
  background: var(--brand-050);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand-500) 18%, transparent);
  transition: transform .22s ease;
}

.feat__cell:hover .feat__icon { transform: translateY(-3px) scale(1.04); }

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

.feat__cell h3 { font-size: 18px; font-weight: 650; }
.feat__cell p { font-size: 14.5px; color: var(--ink-soft); }

/* ================= 方案矩阵（门户首页 7 卡） ================= */

.solgrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 24px);
}

@media (max-width: 1000px) { .solgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .solgrid { grid-template-columns: minmax(0, 1fr); } }

.sol {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 28px 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .22s ease, transform .22s ease, border-color .22s ease;
}

.sol:hover {
  border-color: var(--sol-color, var(--brand-500));
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.sol__no {
  position: absolute;
  top: 22px;
  right: 24px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-faint);
}

.sol__icon {
  width: 54px;
  height: 54px;
  padding: 12px;
  border-radius: var(--r-sm);
  color: var(--sol-color, var(--brand-600));
  background: color-mix(in srgb, var(--sol-color, var(--brand-600)) 10%, var(--surface));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--sol-color, var(--brand-600)) 20%, transparent);
  transition: transform .22s ease;
}

.sol:hover .sol__icon { transform: translateY(-3px) scale(1.04); }
.sol__icon svg { width: 100%; height: 100%; display: block; }

.sol__name { font-size: 18.5px; font-weight: 650; }
.sol__en {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sol-color, var(--brand-600));
}

.sol__desc { font-size: 14.5px; color: var(--ink-soft); flex: 1; }

.sol__points {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.sol__points span {
  font-size: 12.5px;
  padding: 3px 11px;
  border-radius: 999px;
  color: var(--sol-color, var(--brand-600));
  background: color-mix(in srgb, var(--sol-color, var(--brand-600)) 8%, var(--surface));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--sol-color, var(--brand-600)) 16%, transparent);
  white-space: nowrap;
}

.sol__go {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 6px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  font-weight: 600;
  color: var(--sol-color, var(--brand-600));
}

.sol__go::after { content: "→"; transition: transform .18s ease; }
.sol:hover .sol__go::after { transform: translateX(4px); }

/* ================= 痛点区（方案页） ================= */

.pains {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 1.8vw, 20px);
}

@media (max-width: 780px) { .pains { grid-template-columns: minmax(0, 1fr); } }

.pain {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 24px 26px;
  display: flex;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.sec--alt .pain { background: var(--ground); }

.pain__no {
  flex: none;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-600);
  background: var(--brand-050);
  border-radius: 6px;
  width: 34px;
  height: 30px;
  display: grid;
  place-items: center;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand-500) 18%, transparent);
}

.pain h3 { font-size: 16.5px; font-weight: 650; margin-bottom: 6px; }
.pain p { font-size: 14.5px; color: var(--ink-soft); }

/* ================= 场景方案卡（2×2，含实拍图，广告机页沿用） ================= */

.plans {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 24px);
}

@media (max-width: 780px) { .plans { grid-template-columns: minmax(0, 1fr); } }

.plan {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .22s ease, transform .22s ease, border-color .22s ease;
}

.plan:hover {
  border-color: var(--brand-500);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.plan__art {
  position: relative;
  aspect-ratio: 16 / 8.5;
  overflow: hidden;
  background: linear-gradient(125deg, var(--brand-800), var(--brand-700));
}

.plan__art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(1.06) saturate(1.06);
  transition: transform .5s cubic-bezier(.2, .7, .2, 1);
}

.plan:hover .plan__art img { transform: scale(1.05); }

.plan__art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 46%, rgba(5, 20, 38, .52) 100%);
  pointer-events: none;
}

.plan__scene {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 1;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(5, 20, 38, .55);
  border: 1px solid rgba(255, 255, 255, .28);
  backdrop-filter: blur(6px);
  color: #FFFFFF;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.plan__body { padding: 22px 24px 26px; display: flex; flex-direction: column; gap: 11px; }

.plan__who {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--brand-600);
}

.plan__body h3 { font-size: 19px; font-weight: 650; }
.plan__pain { font-size: 14.5px; color: var(--ink-soft); }

.tags { display: flex; flex-wrap: wrap; gap: 7px; }

.tag {
  font-size: 12.5px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--brand-050);
  color: var(--brand-600);
  white-space: nowrap;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand-500) 16%, transparent);
}

.plan__win {
  display: flex;
  gap: 9px;
  align-items: baseline;
  font-size: 14.5px;
  font-weight: 600;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.plan__win::before { content: "→"; color: var(--brand-600); flex: none; }

/* 纯文字场景卡（无实拍图的方案页使用） */
.plan--text .plan__body { padding: 26px 26px 24px; }

.plan__badge {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--brand-600);
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--brand-050);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--brand-500) 16%, transparent);
}

.more {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  margin-top: clamp(16px, 2vw, 24px);
}

.more > div { background: var(--surface); padding: 22px 24px; }
.more h4 { font-size: 15.5px; font-weight: 650; margin-bottom: 5px; }
.more p { font-size: 14px; color: var(--ink-soft); }

/* ================= 流程 ================= */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: clamp(12px, 1.6vw, 18px);
  counter-reset: step;
}

.step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 26px 22px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .22s ease, transform .22s ease, border-color .22s ease;
}

.step:hover {
  border-color: var(--brand-500);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.sec--alt .step { background: var(--ground); }

.step b {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(120deg, var(--brand-600), var(--brand-500));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.step h3 { font-size: 17px; font-weight: 650; }
.step p { font-size: 14px; color: var(--ink-soft); }

/* ================= 规格表 ================= */

.spec { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); box-shadow: var(--shadow-sm); }
.sec--alt .spec { background: var(--ground); }

table { width: 100%; border-collapse: collapse; min-width: 560px; font-size: 15px; }

tr + tr { border-top: 1px solid var(--line); }

th {
  width: 30%;
  text-align: left;
  padding: 15px clamp(16px, 2.4vw, 28px);
  font-weight: 600;
  background: var(--surface-alt);
  white-space: nowrap;
}

td {
  padding: 15px clamp(16px, 2.4vw, 28px);
  color: var(--ink-soft);
  font-size: 14.5px;
}

/* ================= 通用 CTA 区（方案咨询 / 预约演示） ================= */

.cta {
  position: relative;
  background:
    radial-gradient(100% 120% at 88% 10%, var(--stage-glow) 0%, transparent 58%),
    linear-gradient(118deg, var(--stage-1), var(--stage-2));
  color: var(--on-stage);
  border-block: 1px solid var(--line);
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--stage-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--stage-grid) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: linear-gradient(285deg, #000 0%, transparent 68%);
  -webkit-mask-image: linear-gradient(285deg, #000 0%, transparent 68%);
  pointer-events: none;
}

.cta__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  padding-block: clamp(48px, 6vw, 78px);
}

@media (max-width: 760px) { .cta__inner { grid-template-columns: minmax(0, 1fr); } }

.cta h2 { font-size: clamp(24px, 3vw, 36px); font-weight: 700; }
.cta p { margin-top: 16px; color: var(--on-stage-soft); max-width: 40em; }
.cta__row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.cta__hint { margin-top: 18px; font-size: 13px; color: var(--on-stage-faint); }

/* CTA 右侧联系卡 */
.cta__card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  padding: 26px 28px;
  min-width: 268px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cta__card span { font-size: 12px; color: var(--ink-faint); letter-spacing: .1em; }
.cta__card b {
  font-family: var(--mono);
  font-size: 26px;
  color: var(--brand-600);
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
}

.cta__card p { margin: 0; font-size: 13.5px; color: var(--ink-soft); }

/* ================= 下载区（广告机页保留） ================= */

.getapp {
  position: relative;
  background:
    radial-gradient(100% 120% at 88% 10%, var(--stage-glow) 0%, transparent 58%),
    linear-gradient(118deg, var(--stage-1), var(--stage-2));
  color: var(--on-stage);
  border-block: 1px solid var(--line);
  overflow: hidden;
}

.getapp::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("hero-city.jpg") center 68% / cover no-repeat;
  opacity: calc(var(--stage-fig) * .8);
  pointer-events: none;
}

.getapp__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  padding-block: clamp(48px, 6vw, 78px);
}

@media (max-width: 760px) { .getapp__inner { grid-template-columns: minmax(0, 1fr); } }

.getapp h2 { font-size: clamp(24px, 3vw, 36px); font-weight: 700; }
.getapp p { margin-top: 16px; color: var(--on-stage-soft); max-width: 40em; }
.getapp__row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.getapp__hint { margin-top: 18px; font-size: 13px; color: var(--on-stage-faint); }

/* 下载卡片组 */
.dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

@media (max-width: 900px) { .dl { grid-template-columns: minmax(0, 1fr); } }

.dl__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 20px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.dl__card:hover {
  border-color: var(--brand-500);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.dl__card--rec {
  border-color: var(--brand-500);
  box-shadow: var(--shadow-md), 0 0 0 3px var(--brand-050);
}

.dl__badge {
  position: absolute;
  top: -10px;
  right: 14px;
  padding: 3px 10px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--brand-600), var(--brand-500));
  color: #FFFFFF;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: 0 3px 10px color-mix(in srgb, var(--brand-600) 40%, transparent);
  display: none;
}

.dl__card--rec .dl__badge { display: block; }

.dl__head { display: flex; align-items: center; gap: 12px; }

.dl__icon {
  width: 42px;
  height: 42px;
  padding: 9px;
  border-radius: 10px;
  background: var(--brand-050);
  color: var(--brand-600);
  flex: none;
}

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

.dl__name { font-size: 16.5px; font-weight: 650; line-height: 1.3; }
.dl__for { font-size: 12.5px; color: var(--ink-faint); }
.dl__meta { margin-top: 2px; font-family: var(--mono); font-size: 12px; color: var(--ink-soft); }

.dl__btn {
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-size: 14.5px;
  font-weight: 600;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease;
}

.dl__btn:hover { border-color: var(--brand-500); color: var(--brand-600); background: var(--brand-050); }

.dl__card--rec .dl__btn {
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  border-color: transparent;
  color: #FFFFFF;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--brand-600) 32%, transparent);
}

.dl__card--rec .dl__btn:hover { box-shadow: 0 8px 22px color-mix(in srgb, var(--brand-600) 42%, transparent); color: #FFFFFF; }

.dl__btn--disabled,
.dl__btn--disabled:hover {
  border-style: dashed;
  border-color: var(--line-strong);
  color: var(--ink-faint);
  background: transparent;
  cursor: not-allowed;
}

.getapp__detect { margin-top: 16px; font-size: 13px; color: var(--on-stage-soft); display: flex; align-items: center; gap: 8px; }
.getapp__detect i { width: 7px; height: 7px; border-radius: 50%; background: #2FBF8F; display: block; flex: none; }

.qr { text-align: center; }

.qr__box {
  width: 158px;
  height: 158px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  font-size: 12px;
  color: var(--ink-faint);
  background: #FFFFFF;
  box-shadow: var(--shadow-md);
}

.qr span { display: block; margin-top: 10px; font-size: 12.5px; color: var(--on-stage-faint); }

/* ================= FAQ ================= */

.faq { border-top: 1px solid var(--line); }

.faq details { border-bottom: 1px solid var(--line); background: var(--surface); transition: background-color .2s ease; }
.sec--alt .faq details { background: var(--ground); }
.faq details[open] { background: var(--brand-050); }

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 19px clamp(16px, 2.2vw, 26px);
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand-600); font-size: 20px; flex: none; }
.faq details[open] summary::after { content: "−"; }

.faq details > p {
  padding: 0 clamp(16px, 2.2vw, 26px) 20px;
  color: var(--ink-soft);
  font-size: 14.5px;
}

/* ================= 页脚 ================= */

.foot { background: var(--surface-alt); border-top: 1px solid var(--line); color: var(--ink-soft); }

.foot__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.2fr) minmax(0, 1fr) auto;
  gap: clamp(28px, 4vw, 56px);
  padding-block: clamp(40px, 5vw, 60px);
}

@media (max-width: 1000px) { .foot__inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
@media (max-width: 640px) { .foot__inner { grid-template-columns: minmax(0, 1fr); } }

.foot h4 { color: var(--ink); font-size: 15.5px; margin-bottom: 14px; font-weight: 650; }
.foot p, .foot li { font-size: 14px; line-height: 2; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot a:hover { color: var(--brand-600); }

.foot__logo { display: flex; align-items: center; gap: 10px; color: var(--ink); font-size: 20px; font-weight: 700; margin-bottom: 14px; }

.foot__qr {
  width: 116px;
  height: 116px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  font-size: 11.5px;
  color: var(--ink-faint);
  background: #FFFFFF;
  text-align: center;
}

.foot__bar {
  border-top: 1px solid var(--line);
  padding-block: 18px 26px;
  font-size: 13px;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  justify-content: space-between;
}

/* ================= 悬浮客服 ================= */

.dock {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: rgba(255, 255, 255, .2);
  border-radius: var(--r-sm) 0 0 var(--r-sm);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.dock a {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  background: var(--brand-600);
  color: #FFFFFF;
  transition: background-color .18s ease;
}

.dock a:hover { background: var(--brand-500); }
.dock svg { width: 22px; height: 22px; }

@media (max-width: 820px) { .dock { display: none; } }

/* ================= 入场动画 ================= */

.rise { opacity: 1; transform: none; }

.js-anim .rise {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s ease, transform .55s ease;
}

.js-anim .rise.on { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .js-anim .rise { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
