/* ==========================================================================
   泊觉照明 BoJo Lighting — 官网样式表
   设计基调：暗色高级感 + 暖金色"光"的点缀（呼应照明品牌的行业属性）
   作者：WorkBuddy  |  版本：1.0
   --------------------------------------------------------------------------
   目录
   00 设计令牌 (Design Tokens)
   01 基础重置 & 排版
   02 通用组件（按钮 / 区块标题 / 容器）
   03 顶部导航
   04 Hero
   05 关于泊觉
   06 解决方案
   07 服务流程时间线
   08 照明标准
   09 案例 Tabs
   10 为什么选择泊觉 / 联系 / 页脚
   11 动效 & 响应式
   ========================================================================== */

/* ============================ 00 设计令牌 ============================ */
:root {
  /* 底色：由深到浅的三级暗色，构建层次 */
  --bg:        #0a0b0d;
  --bg-alt:    #0f1114;
  --panel:     #14171c;
  --panel-2:   #191d23;

  /* 文本 */
  --text:      #eceff3;
  --text-soft: #b9c0cb;
  --muted:     #8b939f;

  /* 主题色：暖金（"光"的色相） */
  --accent:      #e8b96a;
  --accent-soft: #f3d79b;
  --accent-dim:  rgba(232, 185, 106, .14);

  /* 线条与阴影 */
  --line:      rgba(255, 255, 255, .09);
  --line-soft: rgba(255, 255, 255, .05);
  --shadow:    0 18px 50px rgba(0, 0, 0, .5);

  /* 尺寸 */
  --wrap:  1200px;
  --gutter: 24px;
  --radius: 4px;

  /* 字体：全部使用系统字体，避免外部依赖导致首屏空白 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
               Roboto, Helvetica, Arial, sans-serif;
  --font-en: "Helvetica Neue", Helvetica, Arial, sans-serif;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ======================= 01 基础重置 & 排版 ======================= */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* 锚点跳转时预留固定导航的高度，避免标题被遮挡 */
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.25; letter-spacing: .01em; }
p  { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a  { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
strong { color: var(--text); font-weight: 600; }

/* 键盘可见焦点：只在键盘操作时出现，不干扰鼠标用户 */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
:focus:not(:focus-visible) { outline: none; }

/* 跳转到主内容（无障碍） */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 12px 20px;
  background: var(--accent);
  color: #12100c;
  font-weight: 600;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

::selection { background: var(--accent); color: #12100c; }

/* 自定义滚动条（WebKit） */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #0a0b0d; }
::-webkit-scrollbar-thumb { background: #2a2f37; border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #3a4149; }

/* ========================= 02 通用组件 ========================= */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding: 110px 0; position: relative; }
.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

/* 区块标题 */
.sec-head { max-width: 760px; margin-bottom: 56px; }

.sec-no {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--accent);
  margin-bottom: 14px;
}
.sec-title {
  font-size: clamp(26px, 3.4vw, 40px);
  letter-spacing: .02em;
  margin-bottom: 16px;
}
.sec-title .en {
  display: block;
  margin-top: 8px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .34em;
  color: var(--muted);
  text-transform: uppercase;
}
.sec-lead { color: var(--text-soft); font-size: 16px; margin: 0; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}
.btn-primary {
  background: var(--accent);
  color: #12100c;
}
.btn-primary:hover { background: var(--accent-soft); transform: translateY(-2px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.btn-block { width: 100%; }

/* 滚动进入视口的显现动画 */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

.only-desktop { display: none; }
@media (min-width: 900px) { .only-desktop { display: inline; } }

/* ========================= 03 顶部导航 ========================= */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background-color .3s var(--ease), backdrop-filter .3s var(--ease),
              border-color .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-stuck {
  background: rgba(10, 11, 13, .82);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  backdrop-filter: saturate(150%) blur(14px);
  border-bottom-color: var(--line-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { color: var(--accent); display: inline-flex; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong {
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .22em;
}
.brand-text em {
  font-style: normal;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--muted);
}

.nav { display: flex; align-items: center; gap: 30px; }
.nav a {
  font-size: 14.5px;
  color: var(--text-soft);
  position: relative;
  transition: color .22s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width .28s var(--ease);
}
.nav a:hover, .nav a.is-current { color: var(--text); }
.nav a:hover::after, .nav a.is-current::after { width: 100%; }

.nav-cta {
  padding: 9px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--accent) !important;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--accent-dim); border-color: var(--accent); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 18px; height: 1.5px;
  background: var(--text);
  transition: transform .28s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============================ 04 Hero ============================ */
.hero {
  position: relative;
  min-height: 100svh;          /* 移动端友好：优先 svh，下方兜底 vh */
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 150px 0 90px;
  overflow: hidden;
  background:
    radial-gradient(1000px 520px at 72% 10%, rgba(232,185,106,.11), transparent 62%),
    radial-gradient(760px 460px at 12% 82%, rgba(232,185,106,.07), transparent 65%),
    linear-gradient(180deg, #0c0e11 0%, #0a0b0d 55%, #08090b 100%);
}
@supports (height: 100dvh) { .hero { min-height: 100dvh; } }

/* —— Hero 光影装饰层（纯 CSS，无图片依赖）—— */
.hero-light { position: absolute; inset: 0; pointer-events: none; }

/* 三束从上方射下的光锥 */
.beam {
  position: absolute;
  top: -12%;
  width: 220px;
  height: 78%;
  background: linear-gradient(180deg, rgba(232,185,106,.22), rgba(232,185,106,.05) 45%, transparent 78%);
  filter: blur(26px);
  transform-origin: top center;
  opacity: .8;
}
.beam-1 { left: 12%;  transform: rotate(-13deg); }
.beam-2 { left: 44%;  width: 300px; transform: rotate(4deg);  opacity: .95; }
.beam-3 { left: 76%;  transform: rotate(15deg); }
.hero-light .beam { animation: beamSway 12s ease-in-out infinite; }
.beam-2 { animation-delay: -3s !important; }
.beam-3 { animation-delay: -6s !important; }

@keyframes beamSway {
  0%, 100% { opacity: .55; filter: blur(26px); }
  50%      { opacity: .95; filter: blur(20px); }
}

/* 地面上的两处光斑 */
.pool {
  position: absolute;
  bottom: 6%;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(232,185,106,.20), transparent 72%);
  filter: blur(16px);
}
.pool-1 { left: 8%;  width: 520px; height: 130px; }
.pool-2 { right: 4%; width: 420px; height: 110px; opacity: .7; }

/* 精细网格线，增加空间纵深感 */
.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px),
    linear-gradient(180deg, var(--line-soft) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 50% 42%, #000 12%, transparent 76%);
          mask-image: radial-gradient(ellipse 78% 62% at 50% 42%, #000 12%, transparent 76%);
  opacity: .85;
}

.hero-inner { position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: .22em;
  color: var(--accent);
  padding: 7px 16px;
  border: 1px solid rgba(232,185,106,.28);
  border-radius: 100px;
  background: rgba(232,185,106,.06);
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(38px, 7vw, 76px);
  line-height: 1.12;
  letter-spacing: .02em;
  margin-bottom: 26px;
}
.hero-title .accent {
  color: var(--accent);
  /* 光晕感：文字外发光 */
  text-shadow: 0 0 44px rgba(232,185,106,.42);
}

.hero-sub {
  max-width: 620px;
  font-size: clamp(15px, 1.35vw, 17px);
  color: var(--text-soft);
  margin-bottom: 40px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 72px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin: 0;
  padding-top: 34px;
  border-top: 1px solid var(--line-soft);
  max-width: 760px;
}
.hero-stats div { min-width: 0; }
.hero-stats dt {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .06em;
  margin-bottom: 8px;
}
.hero-stats dd {
  margin: 0;
  font-family: var(--font-en);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 700;
  color: var(--accent);
  display: flex;
  align-items: baseline;
  gap: 2px;
  white-space: nowrap;
}
.hero-stats dd i { font-style: normal; font-size: .62em; color: var(--text-soft); }
/* 第四项是文字型指标，字体需要小一点 */
.hero-stats div:last-child dd { font-size: clamp(15px, 1.5vw, 18px); color: var(--text); }

/* ========================= 05 关于泊觉 ========================= */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 84px;
}

.about-h { font-size: clamp(19px, 2vw, 23px); margin-bottom: 18px; }
.about-text p { color: var(--text-soft); }
.about-text strong { color: var(--accent); font-weight: 600; }

.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0; }
.tag-list li {
  font-size: 13px;
  color: var(--text-soft);
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 100px;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.tag-list li:hover { border-color: var(--accent); color: var(--accent); }

.about-quote {
  margin: 0;
  padding-left: 20px;
  border-left: 2px solid var(--accent);
  font-size: 15.5px;
  color: var(--text);
}

/* 关于区的视觉装置：一盏灯 + 光锥（纯 CSS 绘制） */
.about-visual { display: flex; justify-content: center; }
.vs-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 4 / 3.4;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(232,185,106,.10), transparent 60%),
    linear-gradient(180deg, #15181d, #0e1013);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.vs-lamp {
  position: absolute;
  top: 14%; left: 50%;
  transform: translateX(-50%);
  width: 108px; height: 12px;
  border-radius: 20px;
  background: linear-gradient(180deg, #2a2f37, #14171c);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 0 26px rgba(232,185,106,.3);
}
.vs-cone {
  position: absolute;
  top: 17%; left: 50%;
  transform: translateX(-50%);
  width: 340px; height: 62%;
  background: linear-gradient(180deg, rgba(232,185,106,.30), rgba(232,185,106,.06) 60%, transparent);
  clip-path: polygon(47% 0, 53% 0, 100% 100%, 0 100%);
  filter: blur(9px);
}
.vs-floor {
  position: absolute;
  bottom: 14%; left: 50%;
  transform: translateX(-50%);
  width: 78%; height: 90px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(232,185,106,.30), transparent 74%);
  filter: blur(9px);
}
.vs-caption {
  position: absolute;
  left: 22px; bottom: 18px;
  display: flex; flex-direction: column; gap: 2px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--muted);
  text-transform: uppercase;
}

/* 三大业务板块 */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.pillar {
  padding: 34px 30px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: border-color .3s var(--ease), transform .3s var(--ease), background-color .3s var(--ease);
}
.pillar:hover {
  border-color: rgba(232,185,106,.34);
  background: var(--panel-2);
  transform: translateY(-4px);
}
.pillar-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  margin-bottom: 20px;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: 50%;
}
.pillar h4 { font-size: 17px; margin-bottom: 12px; }
.pillar h4 em {
  display: block;
  margin-top: 5px;
  font-style: normal;
  font-family: var(--font-en);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .24em;
  color: var(--muted);
  text-transform: uppercase;
}
.pillar p { margin: 0; font-size: 14.5px; color: var(--text-soft); }

/* ========================= 06 解决方案 ========================= */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.sol-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 380px;
  padding: 32px 30px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s var(--ease);
}
.sol-card:hover { transform: translateY(-5px); border-color: rgba(232,185,106,.32); }

/* 卡片底图：用渐变 + 光斑模拟商业空间氛围，避免依赖外部图片 */
.sol-bg { position: absolute; inset: 0; z-index: 0; transition: transform .6s var(--ease); }
.sol-card:hover .sol-bg { transform: scale(1.05); }

.sol-bg-retail {
  background:
    radial-gradient(60% 45% at 78% 18%, rgba(232,185,106,.30), transparent 68%),
    radial-gradient(50% 40% at 20% 78%, rgba(232,185,106,.13), transparent 70%),
    linear-gradient(200deg, #1b1f26, #0d0f12);
}
.sol-bg-food {
  background:
    radial-gradient(58% 46% at 26% 20%, rgba(255,168,96,.30), transparent 68%),
    radial-gradient(52% 42% at 82% 76%, rgba(232,185,106,.12), transparent 70%),
    linear-gradient(200deg, #201814, #0d0f12);
}
.sol-bg-market {
  background:
    radial-gradient(62% 46% at 50% 14%, rgba(198,226,255,.22), transparent 68%),
    radial-gradient(50% 42% at 14% 80%, rgba(232,185,106,.14), transparent 70%),
    linear-gradient(200deg, #171c22, #0d0f12);
}
/* 底部压暗，保证文字可读性（重要：对比度达标） */
.sol-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(10,11,13,.15) 0%, rgba(10,11,13,.86) 62%, rgba(10,11,13,.96) 100%);
}
.sol-body { position: relative; z-index: 2; }
.sol-body h3 { font-size: 21px; margin-bottom: 12px; }
.sol-body > p { font-size: 14.5px; color: var(--text-soft); margin-bottom: 18px; }

.sol-points { display: flex; flex-direction: column; gap: 7px; }
.sol-points li {
  font-size: 13px;
  color: var(--text-soft);
  padding-left: 15px;
  position: relative;
}
.sol-points li::before {
  content: "";
  position: absolute;
  left: 0; top: .72em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ========================= 07 服务流程 ========================= */
.timeline { position: relative; padding-left: 0; }
/* 竖向贯穿线 */
.timeline::before {
  content: "";
  position: absolute;
  left: 31px; top: 12px; bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--line) 8%, var(--line) 92%, transparent);
}

.tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 32px;
  padding: 0 0 52px;
}
.tl-item:last-child { padding-bottom: 0; }

.tl-node {
  position: relative;
  z-index: 1;
  width: 64px; height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  background: var(--panel);
  border: 1px solid rgba(232,185,106,.3);
  border-radius: 50%;
  box-shadow: 0 0 0 7px var(--bg);
  transition: background-color .3s var(--ease), color .3s var(--ease);
}
.section-alt .tl-node { box-shadow: 0 0 0 7px var(--bg-alt); }
.tl-item:hover .tl-node { background: var(--accent); color: #12100c; }

.tl-body h3 { font-size: 21px; margin-bottom: 6px; }
.tl-sub {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--accent);
  margin-bottom: 18px;
}
.tl-points { display: flex; flex-direction: column; gap: 11px; }
.tl-points li {
  font-size: 14.5px;
  color: var(--text-soft);
  padding-left: 18px;
  position: relative;
}
.tl-points li::before {
  content: "";
  position: absolute;
  left: 0; top: .78em;
  width: 7px; height: 1px;
  background: var(--accent);
}
.tl-points strong { color: var(--text); }

/* ========================= 08 照明标准 ========================= */
.std-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 48px;
  align-items: start;
}

.bar-row {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 20px;
  align-items: center;
  margin-bottom: 22px;
}
.bar-label {
  font-size: 14px;
  color: var(--text);
  display: flex;
  flex-direction: column;
  line-height: 1.4;
}
.bar-label i {
  font-style: normal;
  font-size: 11.5px;
  color: var(--muted);
  margin-top: 3px;
}
.bar-track {
  position: relative;
  height: 40px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
}
.bar {
  height: 100%;
  width: 0;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(232,185,106,.30), var(--accent));
  transition: width 1.1s var(--ease);
}
/* 数值放在条形外侧：短条也不会被裁切，且与填充色对比更稳 */
.bar span {
  position: absolute;
  left: calc(var(--w) + 14px);
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-en);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  line-height: 1;
}

.std-note {
  padding: 34px 30px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}
.std-note h3 { font-size: 18px; margin-bottom: 16px; color: var(--accent); }
.std-note p { font-size: 14.5px; color: var(--text-soft); }
.std-note strong { color: var(--accent); }
.std-list { display: flex; flex-direction: column; gap: 14px; margin: 22px 0 18px; }
.std-list li {
  font-size: 14px;
  color: var(--text-soft);
  padding: 14px 16px;
  background: rgba(255,255,255,.025);
  border-left: 2px solid var(--accent);
  border-radius: 0 3px 3px 0;
}
.std-list span {
  display: inline-block;
  font-family: var(--font-en);
  font-weight: 700;
  color: var(--accent);
  margin-right: 6px;
}
.std-tip {
  margin: 0;
  font-size: 12.5px !important;
  color: var(--muted) !important;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

/* ========================= 09 案例 Tabs ========================= */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 0;
}
.tab {
  position: relative;
  padding: 13px 22px;
  font-family: inherit;
  font-size: 15px;
  color: var(--muted);
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: color .25s var(--ease);
}
.tab::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform .3s var(--ease);
}
.tab:hover { color: var(--text); }
.tab.is-active { color: var(--text); }
.tab.is-active::after { transform: scaleX(1); }

.panel-desc {
  max-width: 780px;
  font-size: 15px;
  color: var(--text-soft);
  margin-bottom: 30px;
}

.logo-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.logo-wall li {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 78px;
  padding: 16px 18px;
  text-align: center;
  font-family: var(--font-en);
  font-size: 14.5px;
  letter-spacing: .04em;
  color: var(--text-soft);
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: color .28s var(--ease), border-color .28s var(--ease), background-color .28s var(--ease);
}
.logo-wall li:hover {
  color: var(--accent);
  border-color: rgba(232,185,106,.36);
  background: var(--panel-2);
}
.logo-wall-sub li { font-size: 13.5px; font-family: var(--font-sans); min-height: 62px; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 26px;
}
.case-card {
  padding: 28px 26px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background-color .3s var(--ease), transform .3s var(--ease);
}
.case-card:hover { background: var(--panel-2); transform: translateX(3px); }
.case-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--accent);
  padding: 4px 10px;
  border: 1px solid rgba(232,185,106,.3);
  border-radius: 100px;
  margin-bottom: 14px;
}
.case-card h3 { font-size: 20px; margin-bottom: 10px; }
.case-card p { margin: 0; font-size: 14px; color: var(--text-soft); }

.panel-foot {
  margin-top: 22px;
  font-size: 12.5px;
  color: var(--muted);
}
.case-note {
  margin: 42px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--muted);
}

/* ================= 10 为什么选择泊觉 / 联系 / 页脚 ================= */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.why {
  padding: 32px 26px;
  border-top: 2px solid var(--line);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.why:hover { border-top-color: var(--accent); transform: translateY(-4px); }
.why strong {
  display: block;
  font-family: var(--font-en);
  font-size: 30px;
  font-weight: 700;
  color: rgba(232,185,106,.30);
  margin-bottom: 14px;
  transition: color .3s var(--ease);
}
.why:hover strong { color: var(--accent); }
.why h3 { font-size: 16.5px; margin-bottom: 10px; }
.why p { margin: 0; font-size: 14px; color: var(--text-soft); }

/* 联系区 */
.section-contact {
  background:
    radial-gradient(760px 420px at 88% 6%, rgba(232,185,106,.09), transparent 62%),
    var(--bg-alt);
  border-top: 1px solid var(--line-soft);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact-lead { font-size: 15.5px; color: var(--text-soft); margin-bottom: 34px; max-width: 460px; }

.contact-list { display: flex; flex-direction: column; gap: 2px; }
.contact-list li {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}
.ci-label {
  flex: 0 0 52px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
}
.contact-list a, .contact-list span:last-child {
  font-size: 15.5px;
  color: var(--text);
  transition: color .22s var(--ease);
}
.contact-list a:hover { color: var(--accent); }

/* 表单 */
.contact-form {
  padding: 36px 34px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}
.field { margin-bottom: 20px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.field label {
  display: block;
  font-size: 13.5px;
  color: var(--text-soft);
  margin-bottom: 9px;
}
.req { color: var(--accent); }

.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--text);
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}
.field textarea { resize: vertical; min-height: 104px; }
.field input::placeholder, .field textarea::placeholder { color: #5d646e; }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--accent);
  background: rgba(255,255,255,.05);
  outline: none;
}
.field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%238b939f' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 11px;
  padding-right: 38px;
  cursor: pointer;
}
.field select option { background: #14171c; color: var(--text); }

.field.is-invalid input, .field.is-invalid textarea { border-color: #e8604c; }
.err {
  margin: 7px 0 0;
  font-size: 12.5px;
  color: #e8604c;
  min-height: 0;
}
.form-status {
  margin: 14px 0 0;
  font-size: 13.5px;
  color: var(--accent);
  min-height: 20px;
}
.form-note {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--muted);
}

/* 页脚 */
.site-footer {
  background: #07080a;
  border-top: 1px solid var(--line-soft);
  padding: 62px 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 46px;
}
.f-brand strong {
  display: block;
  font-family: var(--font-en);
  font-size: 17px;
  letter-spacing: .18em;
  color: var(--accent);
  margin-bottom: 14px;
}
.f-brand p { font-size: 13.5px; color: var(--muted); line-height: 1.8; margin: 0; }

.f-nav { display: flex; flex-direction: column; gap: 11px; }
.f-nav a { font-size: 14px; color: var(--text-soft); transition: color .22s var(--ease); }
.f-nav a:hover { color: var(--accent); }

.f-contact p { font-size: 13.5px; color: var(--muted); margin: 0 0 9px; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 24px 26px;
  border-top: 1px solid var(--line-soft);
  max-width: var(--wrap);
  margin-inline: auto;
}
.footer-bottom p { margin: 0; font-size: 12.5px; color: #5d646e; }
.f-slogan {
  font-size: 13px !important;
  letter-spacing: .26em;
  color: rgba(232,185,106,.7) !important;
}

/* 返回顶部 */
.to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  z-index: 90;
  width: 46px; height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  background: rgba(20,23,28,.9);
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
  transition: color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease), opacity .25s var(--ease);
}
.to-top:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-3px); }
.to-top[hidden] { display: none; }

/* ========================= 11 响应式 ========================= */
@media (max-width: 1080px) {
  .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .about-visual { order: -1; }
  .vs-card { max-width: 100%; aspect-ratio: 16 / 9; }
  .std-grid { grid-template-columns: 1fr; gap: 36px; }
  .why-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .section { padding: 78px 0; }
  .sec-head { margin-bottom: 42px; }

  /* 移动端导航：抽屉式 */
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px var(--gutter) 26px;
    background: rgba(10,11,13,.97);
    -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
  }
  .nav.is-open { opacity: 1; transform: none; visibility: visible; }
  .nav a { padding: 15px 0; border-bottom: 1px solid var(--line-soft); font-size: 16px; }
  .nav a::after { display: none; }
  .nav-cta { margin-top: 16px; text-align: center; border-bottom: 0 !important; }

  .hero { padding: 120px 0 70px; }
  .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 16px; }
  .hero-actions { margin-bottom: 48px; }

  .pillar-grid, .sol-grid, .case-grid { grid-template-columns: 1fr; }
  .sol-card { min-height: 330px; }

  .timeline::before { left: 23px; }
  .tl-item { grid-template-columns: 48px 1fr; gap: 22px; padding-bottom: 42px; }
  .tl-node { width: 48px; height: 48px; font-size: 13.5px; }

  .bar-row { grid-template-columns: 1fr; gap: 9px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-form { padding: 28px 22px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 560px) {
  .why-grid { grid-template-columns: 1fr; }
  .logo-wall { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .to-top { right: 16px; bottom: 16px; }
}

/* 尊重用户的"减少动效"系统偏好 —— 无障碍必备 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .beam, .hero-light .beam { animation: none !important; }
  .bar { transition: none !important; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* 打印样式：去掉装饰，保留内容 */
@media print {
  .site-header, .to-top, .hero-light, .contact-form, .nav-toggle { display: none !important; }
  body { background: #fff; color: #000; }
  .section { padding: 20px 0; break-inside: avoid; }
}