/* ============================================================
   EShopLink 官网 · style.css · v3
   视觉基调：企业克制风（沿用产品端 5.10 规范：#007AFF 体系、
   浅灰底 + 白卡 12px 圆角）＋营销页表现层：深色科技首屏/收尾
   （呼应业界 B2B SaaS 官网范式，首尾同色书挡、中间浅色叙事），
   现场演示区为浅色产品界面示意（克制白卡，非装饰化）。
   零外部请求；断点：1024 / 768；reduced-motion 全局降级。
   ============================================================ */

/* ---------- Token ---------- */
:root {
  --blue: #007AFF;
  --blue-deep: #0056B3;
  --blue-lite: #5FB0FF;      /* 深底上的亮蓝（文字/图标） */
  --blue-bg: #EAF1FF;
  --bg: #F5F6F8;
  --card: #FFFFFF;
  --line: #E5E6EB;
  --text: #1F2329;
  --text-2: #5F6673;
  --text-3: #8A9099;
  --amber: #AD6800; --amber-bg: #FFF3E0;
  --ok: #00875A;   --ok-bg: #E6F7EF;
  --danger: #D54941; --danger-bg: #FDECEA;
  --navy: #0A1322;         /* 页面根色（导航透明时透出） */
  --radius: 12px;
  --shadow: 0 1px 2px rgba(31, 35, 41, .04);
  --shadow-card: 0 6px 16px rgba(31, 35, 41, .08);
  --container: 1200px;
}

/* ---------- Reset / 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--navy); }
body {
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--navy);   /* 首屏导航透明区透出深色，与 hero 一体 */
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
h1, h2, h3 { line-height: 1.35; font-weight: 700; }
img, svg { vertical-align: middle; }
button { font: inherit; border: 0; background: none; cursor: pointer; color: inherit; }
::selection { background: var(--blue); color: #fff; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
section { padding: 84px 0; scroll-margin-top: 60px; }  /* 吸顶导航高度，锚点不遮挡 */

/* ---------- 导航（透明 → 滚动后白底） ---------- */
.navbar {
  position: sticky; top: 0; z-index: 50;
  --nfg: #EDF2F9;               /* 前景主色（深色态） */
  --nfg-dim: rgba(224, 234, 248, .85);
  --nac: var(--blue-lite);      /* hover 强调 */
  --nv-bd: transparent;
  background: transparent;
  border-bottom: 1px solid var(--nv-bd);
  transition: background .3s, border-color .3s, box-shadow .3s;
}
.navbar.scrolled {
  --nfg: var(--text);
  --nfg-dim: var(--text-2);
  --nac: var(--blue);
  --nv-bd: var(--line);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 10px rgba(16, 24, 40, .05);
}
.nav-inner { display: flex; align-items: center; height: 60px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 8px; margin-right: auto; white-space: nowrap; }
.brand b { font-size: 18px; letter-spacing: .01em; color: var(--nfg); transition: color .3s; }
.brand span {
  font-size: 12px; font-weight: 600; color: var(--blue);
  background: var(--blue-bg); border-radius: 999px; padding: 2px 10px;
}
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
  font-size: 15px; color: var(--nfg-dim); padding: 6px 2px;
  white-space: nowrap; transition: color .2s;
}
.nav-links a:hover { color: var(--nac); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 8px; font-size: 14px; font-weight: 600;
  padding: 10px 22px; transition: background .2s, color .2s, transform .2s, box-shadow .2s;
  white-space: nowrap;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); }
.btn-ghost { background: var(--card); color: var(--blue); border: 1px solid var(--blue); }
.btn-ghost:hover { background: var(--blue-bg); }
.btn-lg { font-size: 16px; padding: 13px 30px; }
.btn-glow {   /* 主 CTA 发光渐变（hero / contact） */
  background: linear-gradient(180deg, #3D9BFF 0%, #007AFF 62%);
  box-shadow: 0 10px 26px -6px rgba(0, 122, 255, .55), inset 0 1px 0 rgba(255, 255, 255, .22);
}
.btn-glow:hover {
  background: linear-gradient(180deg, #4FA8FF 0%, #007AFF 62%);
  transform: translateY(-2px);
  box-shadow: 0 16px 34px -8px rgba(0, 122, 255, .65), inset 0 1px 0 rgba(255, 255, 255, .26);
}
.btn-glass {   /* 深色区次级按钮 */
  font-size: 15px; color: #D9E6F7;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .32);
  padding: 13px 26px;
}
.btn-glass:hover { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .6); color: #fff; transform: translateY(-1px); }

.nav-cta { font-size: 13px; padding: 8px 16px; border-color: rgba(255, 255, 255, .5); background: transparent; color: #fff; }
.nav-cta:hover { border-color: rgba(255, 255, 255, .85); background: rgba(255, 255, 255, .1); color: #fff; }
.navbar.scrolled .nav-cta { border-color: var(--blue); background: var(--card); color: var(--blue); }
.navbar.scrolled .nav-cta:hover { background: var(--blue-bg); color: var(--blue); }
.nav-admin { font-size: 14px; font-weight: 500; color: var(--nfg-dim); white-space: nowrap; transition: color .2s; }
.nav-admin:hover { color: var(--nac); }
.nav-admin-m { display: none; }

.menu-btn {
  display: none; width: 44px; height: 44px; border-radius: 8px;
  flex-direction: column; align-items: center; justify-content: center; gap: 4.5px;
}
.menu-btn:hover { background: rgba(127, 127, 127, .18); }
.menu-btn span { width: 20px; height: 2px; border-radius: 1px; background: var(--nfg); transition: background .3s; }

/* ---------- Hero（深色科技首屏） ---------- */
#hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(920px 520px at 84% -8%, rgba(0, 122, 255, .30), transparent 62%),
    radial-gradient(760px 460px at 4% 112%, rgba(56, 150, 255, .14), transparent 60%),
    linear-gradient(180deg, #0B1526 0%, #0C1A31 58%, #0D1F3C 100%);
  padding: 80px 0 96px;
}
/* 细网格层（径向渐隐，纯装饰） */
#hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(760px 460px at 58% 16%, #000 28%, transparent 76%);
          mask-image: radial-gradient(760px 460px at 58% 16%, #000 28%, transparent 76%);
  opacity: .6;
}
#hero > .container { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 52px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 600; color: #8FC3FF;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
  padding: 5px 14px; border-radius: 999px;
}
.live-dot {
  flex: none; width: 7px; height: 7px; border-radius: 50%;
  background: #3D9BFF; animation: dotPulse 2.6s ease-out infinite;
}
@keyframes dotPulse {
  0%   { box-shadow: 0 0 0 0 rgba(61, 155, 255, .5); }
  70%  { box-shadow: 0 0 0 9px rgba(61, 155, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 155, 255, 0); }
}
#hero h1 { margin: 20px 0 16px; font-size: clamp(33px, 4.6vw, 48px); line-height: 1.24; color: #F5F8FD; }
.h1-grad {
  background: linear-gradient(94deg, #79C1FF 0%, #2E8BFF 52%, #6FC8FF 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent; -webkit-text-fill-color: transparent;
}
.hero-sub { font-size: 17px; color: rgba(214, 226, 243, .78); line-height: 1.85; max-width: 520px; }
.hero-cta { display: flex; align-items: center; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-trust {
  display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 34px;
}
.hero-trust li {
  display: flex; align-items: center; gap: 8px;
  font-size: 13.5px; color: rgba(214, 226, 243, .85);
}
.hero-trust li::before {
  content: "✓"; flex: none;
  width: 17px; height: 17px; border-radius: 50%;
  background: rgba(0, 122, 255, .22); color: #5FB0FF;
  font-size: 11px; font-weight: 700; line-height: 1;
  display: flex; align-items: center; justify-content: center;
}

/* Hero 视觉区：环绕光效 + 浮动卡 + 签名手机 */
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; }
.hero-glow {
  position: absolute; left: 50%; top: 50%;
  width: 430px; height: 430px;
  transform: translate(-50%, -55%);
  background: radial-gradient(circle, rgba(0, 122, 255, .30) 0%, rgba(0, 122, 255, .06) 46%, transparent 68%);
  pointer-events: none;
}
.float-card {
  position: absolute; z-index: 2;
  display: flex; align-items: center; gap: 10px;
  background: rgba(17, 28, 48, .82);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 12px; padding: 11px 14px;
  box-shadow: 0 16px 36px rgba(2, 8, 23, .5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.fc-ic {
  flex: none; width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 9px; background: rgba(0, 122, 255, .18); color: #6FB6FF;
}
.fc-ic svg { width: 17px; height: 17px; }
.float-card p b { display: block; font-size: 13px; font-weight: 600; color: #EDF2F9; line-height: 1.4; }
.float-card p span { display: block; font-size: 11.5px; color: #8FA3C0; line-height: 1.4; margin-top: 1px; }
.fc-a { top: -56px; left: -8px; animation: floatA 6s ease-in-out infinite; }
.fc-b { bottom: -68px; right: -8px; animation: floatB 7s ease-in-out .8s infinite; }
@keyframes floatA { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@keyframes floatB { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(9px); } }

/* 签名：扫码手机（拟真竖屏：细黑框/挖孔/侧键/系统状态条） */
.phone-scan {
  position: relative; z-index: 1; width: 256px; aspect-ratio: 9 / 18.3;
  background: #16181D; border-radius: 44px; padding: 3px;
  border: 1px solid rgba(255, 255, 255, .12);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, .03),
    0 34px 70px -14px rgba(1, 6, 18, .75),
    0 0 90px rgba(0, 122, 255, .22);
}
.phone-notch {
  position: absolute; top: 10px; left: 50%; transform: translateX(-50%);
  width: 62px; height: 14px; border-radius: 999px; background: #16181D; z-index: 2;
}
.phone-scan::before {
  content: ""; position: absolute; left: -2px; top: 118px;
  width: 2px; height: 64px; border-radius: 2px 0 0 2px; background: #16181D;
}
.phone-scan::after {
  content: ""; position: absolute; right: -2px; top: 96px;
  width: 2px; height: 38px; border-radius: 0 2px 2px 0; background: #16181D;
}
.phone-screen {
  width: 100%; height: 100%; background: #EEF1F5; border-radius: 41px;
  padding: 27px 12px 12px;
  display: flex; flex-direction: column; gap: 7px;
}
.phone-sb { display: flex; align-items: center; justify-content: space-between; }
.sb-time { font-size: 11px; font-weight: 600; letter-spacing: .02em; }
.sb-icons { display: flex; align-items: center; gap: 4px; color: var(--text); }
.sb-icons svg { height: 10px; width: auto; }
.phone-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12.5px; font-weight: 600;
}
.shop-name { font-size: 12.5px; font-weight: 700; }
.head-bell { position: relative; display: flex; align-items: center; color: var(--text-2); }
.head-bell svg { width: 16px; height: 16px; }
.head-bell i {
  position: absolute; top: -2px; right: -3px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--danger); border: 1.5px solid #EEF1F5;
}
/* 老板工作台屏内：统计 + 今日工单 + 缺件提醒（克制浅色，同 5.10） */
.wb-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.wb-stat {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 7px 4px 6px; text-align: center;
}
.wb-stat b { display: block; font-size: 17px; font-weight: 700; line-height: 1.2; color: var(--text); }
.wb-stat i { display: block; font-style: normal; font-size: 9.5px; color: var(--text-3); margin-top: 1px; }
.wb-stat.hot b { color: var(--blue); }
.wb-list { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.wb-list-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11px; font-weight: 600; margin: 3px 2px 6px;
}
.wb-list-head em { font-style: normal; font-size: 10px; font-weight: 400; color: var(--text-3); }
.wb-row {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 7px 10px; margin-bottom: 6px;
}
.wb-row p { min-width: 0; }
.wb-row p b {
  display: block; font-size: 11.5px; font-weight: 600;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.wb-row p span {
  display: block; font-size: 9.5px; color: var(--text-3); margin-top: 2px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.wb-pill {
  flex: none; font-style: normal; font-size: 10px; font-weight: 600;
  padding: 2px 8px; border-radius: 999px; white-space: nowrap;
}
.p-run  { color: var(--blue);   background: var(--blue-bg); }
.p-wait { color: var(--amber);  background: var(--amber-bg); }
.p-ok   { color: var(--ok);     background: var(--ok-bg); }
.wb-remind {
  display: flex; align-items: center; gap: 8px;
  background: var(--amber-bg); border: 1px solid #F0DDBB;
  border-radius: 10px; padding: 6px 10px;
}
.wb-remind svg { flex: none; width: 15px; height: 15px; color: var(--amber); }
.wb-remind p { min-width: 0; }
.wb-remind b { display: block; font-size: 10.5px; font-weight: 600; color: #8A5300; }
.wb-remind span {
  display: block; font-size: 9.5px; color: #A9711B; line-height: 1.45; margin-top: 1px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ---------- 区块头与通用栅格 ---------- */
.sec-head { text-align: center; margin-bottom: 46px; }
.sec-eyebrow {
  display: flex; align-items: center; justify-content: center; gap: 9px;
  font-size: 12px; font-weight: 700; letter-spacing: .16em;
  color: var(--blue); margin-bottom: 14px;
}
.sec-eyebrow::before,
.sec-eyebrow::after {
  content: ""; width: 18px; height: 1px;
  background: linear-gradient(90deg, transparent, currentColor);
}
.sec-eyebrow::after { background: linear-gradient(90deg, currentColor, transparent); }
.sec-head h2 { font-size: clamp(24px, 3vw, 30px); }
.section-sub { color: var(--text-2); font-size: 15px; margin: 10px auto 0; max-width: 640px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 26px 24px;
}
@media (hover: hover) {
  .card { transition: transform .2s, box-shadow .2s, border-color .2s; }
  .card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); border-color: #D6DFEB; }
}

/* ---------- 痛点 → 收益 ---------- */
#pain { background: #fff; }
.pain-card h3 { font-size: 17px; margin-bottom: 8px; }
.pain-q {
  font-size: 14px; color: var(--text-2); line-height: 1.8;
  padding-left: 12px; border-left: 3px solid #FFD9C2;
}
.gain {
  border-top: 1px dashed var(--line); margin-top: 16px; padding-top: 14px;
  font-size: 14.5px; font-weight: 600; line-height: 1.7;
}
.gain-tag {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--blue);
  background: var(--blue-bg); border-radius: 6px; padding: 2px 8px; margin-bottom: 6px;
}
.gain b { display: block; }

/* ---------- 核心功能 ---------- */
#features { background: var(--bg); }
.feat-ico {
  width: 56px; height: 56px; border-radius: 50%; background: var(--blue-bg);
  display: flex; align-items: center; justify-content: center;
}
.feat-ico svg { width: 26px; height: 26px; color: var(--blue); }
.feat-card h3 { font-size: 16.5px; margin: 16px 0 8px; }
.feat-card p { font-size: 14px; color: var(--text-2); line-height: 1.75; }

/* ---------- 现场演示（深色影院区 · 窗口内为浅色产品界面示意） ---------- */
#demo {
  position: relative; overflow: hidden;
  background:
    radial-gradient(820px 460px at 86% -4%, rgba(0, 122, 255, .16), transparent 62%),
    radial-gradient(720px 420px at 8% 104%, rgba(56, 150, 255, .10), transparent 60%),
    linear-gradient(180deg, #0D1B33 0%, #0A1426 100%);
}
#demo .sec-eyebrow, #contact .sec-eyebrow { color: #8FC3FF; }
#demo .sec-head h2 { color: #F5F8FD; }
#demo .section-sub { color: rgba(214, 226, 243, .72); }

.demo-frame {
  border-radius: 16px; overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .12);
  background: #0D1626;
  box-shadow: 0 40px 90px -20px rgba(2, 8, 23, .8), 0 0 70px rgba(0, 122, 255, .10);
}
.demo-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.win-dots { display: flex; gap: 6px; }
.win-dots i { width: 10px; height: 10px; border-radius: 50%; opacity: .9; }
.win-dots i:nth-child(1) { background: #FF5F57; }
.win-dots i:nth-child(2) { background: #FEBC2E; }
.win-dots i:nth-child(3) { background: #28C840; }
.demo-url {
  font-size: 12px; color: #74839C;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.demo-body { background: #EEF1F5; padding: 14px 16px 18px; display: grid; }
.demo-tabs {
  display: inline-flex; gap: 2px;
  background: #E1E6EE; border-radius: 10px; padding: 4px;
  margin-bottom: 14px;
}
.demo-tab {
  font-size: 13px; font-weight: 600; color: var(--text-2);
  padding: 6px 16px; border-radius: 8px; transition: background .2s, color .2s, box-shadow .2s;
}
.demo-tab:hover { color: var(--text); }
.demo-tab.is-on { background: #fff; color: var(--blue); box-shadow: 0 1px 4px rgba(31, 35, 41, .14); }

/* 三屏用 grid 同格重叠：容器高度恒为最高屏，自动轮播切屏不跳页 */
.demo-screen { display: block; grid-area: 1 / 1; visibility: hidden; opacity: 0; transition: opacity .25s; }
.demo-screen.is-on { visibility: visible; opacity: 1; animation: scrIn .38s ease; }
@keyframes scrIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* 屏 1：工单流转 */
.ds-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 12px; align-items: stretch; }
.work-row {
  display: flex; flex-direction: column; gap: 5px;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; margin-bottom: 8px;
}
.work-row.is-doing { border-color: #B9D8FF; box-shadow: 0 0 0 1px rgba(0, 122, 255, .08); }
.work-row.is-done { opacity: .82; }
.wr-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.wr-top b { font-size: 14px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wr-sub { display: flex; gap: 14px; font-size: 12px; color: var(--text-3); flex-wrap: wrap; }
.st { flex: none; font-size: 12px; font-weight: 600; padding: 1.5px 10px; border-radius: 999px; }
.st-run   { color: var(--blue);   background: var(--blue-bg); }
.st-wait  { color: var(--amber);  background: var(--amber-bg); }
.st-done  { color: var(--ok);     background: var(--ok-bg); }
.ds-side {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 16px;
  display: flex; flex-direction: column; justify-content: center;
}
.ds-side-title { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.mini-flow li {
  position: relative; padding-left: 32px;
  font-size: 13px; color: var(--text-3);
  padding-top: 6px; padding-bottom: 6px;
  display: flex; align-items: center; gap: 8px;
}
.mini-flow li span { flex: 1; }
.mini-flow li i { font-style: normal; font-size: 11.5px; color: var(--text-3); }
.mini-flow li::before {
  content: ""; position: absolute; left: 0; top: 50%;
  width: 18px; height: 18px; border-radius: 50%;
  transform: translateY(-50%);
  background: #fff; border: 1.5px solid #C9CDD4;
}
.mini-flow li.ok span { color: var(--text); font-weight: 500; }
.mini-flow li.ok::before { border-color: var(--blue); background: var(--blue); }
.mini-flow li.ok::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  width: 6px; height: 10px;
  transform: translate(-50%, -54%) rotate(45deg);
  border: solid #fff; border-width: 0 2px 2px 0;
}
.mini-flow li.now span { color: var(--blue); font-weight: 600; }
.mini-flow li.now i { color: var(--blue); }
.mini-flow li.now::before {
  border-color: var(--blue);
  animation: ringPulse 2s ease-out infinite;
}
@keyframes ringPulse {
  0%   { box-shadow: 0 0 0 0 rgba(0, 122, 255, .35); }
  70%  { box-shadow: 0 0 0 8px rgba(0, 122, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 122, 255, 0); }
}
.ds-note {
  font-size: 12px; color: var(--text-3);
  border-top: 1px dashed var(--line); margin-top: 12px; padding-top: 10px;
}

/* 屏 2：今日待办 */
.todo-row {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 13px 16px; margin-bottom: 8px;
}
.todo-row p b { display: block; font-size: 14px; font-weight: 600; }
.todo-row p span { font-size: 12px; color: var(--text-3); }
.todo-row.td-over { background: #FFF8F6; border-color: #FFDFD9; }
.td {
  flex: none; font-style: normal; font-size: 12px; font-weight: 600;
  padding: 2px 11px; border-radius: 999px; white-space: nowrap;
}
.td-blue { color: var(--blue);  background: var(--blue-bg); }
.td-warn { color: var(--amber); background: var(--amber-bg); }
.td-red  { color: var(--danger); background: var(--danger-bg); }
.todo-rule {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 12.5px; color: var(--text-3); margin-top: 12px;
}
.todo-rule i {
  flex: none; width: 7px; height: 7px; border-radius: 50%;
  background: var(--blue); animation: dotPulse 2.6s ease-out infinite;
}

/* 屏 3：缺件联动 */
.split-head {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  font-size: 13px; font-weight: 600; color: var(--text-2); margin-bottom: 12px;
}
.split-head svg { color: var(--blue); flex: none; }
.ds-split { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.lack-col, .po-col {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 14px 10px;
}
.lack-row, .po-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: #F8FAFC; border: 1px solid #EDF0F4; border-radius: 8px;
  padding: 9px 11px; margin-bottom: 8px;
}
.lack-row p b, .po-row p b { display: block; font-size: 13px; font-weight: 600; }
.lack-row p span, .po-row p span { font-size: 11.5px; color: var(--text-3); }
.lack-tag {
  flex: none; font-style: normal; font-size: 11.5px; font-weight: 600;
  color: var(--danger); background: var(--danger-bg);
  padding: 2px 9px; border-radius: 999px; white-space: nowrap;
}
.lack-tag.ok-tag { color: var(--ok); background: var(--ok-bg); }
.po-note { font-size: 12px; color: var(--text-3); line-height: 1.6; padding: 2px 2px 4px; }

/* ---------- 业务闭环 ---------- */
#flow { background: #fff; }
.flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.flow-step {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 20px; position: relative;
}
.step-no {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--blue); color: #fff; font-size: 13px; font-weight: 700;
  margin-bottom: 14px;
  box-shadow: 0 6px 14px -4px rgba(0, 122, 255, .45);
}
.flow-step h3 { font-size: 15.5px; margin-bottom: 6px; }
.flow-step p { font-size: 13.5px; color: var(--text-2); line-height: 1.7; }
.flow-note { text-align: center; color: var(--text-2); font-size: 14px; margin-top: 28px; }

/* ---------- 角色视角 ---------- */
#roles { background: var(--bg); }
.role-card h3 { font-size: 17px; display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.role-card h3 em {
  font-style: normal; font-size: 12px; font-weight: 600; color: var(--blue);
  background: var(--blue-bg); border-radius: 999px; padding: 3px 12px;
}
.role-card p { font-size: 14px; color: var(--text-2); line-height: 1.8; margin-top: 12px; }

/* ---------- 能力信任 ---------- */
#capability { background: #fff; }
.cap-list { max-width: 900px; margin: 0 auto; }
.cap-list li {
  display: flex; align-items: flex-start; gap: 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 22px; margin-bottom: 12px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
@media (hover: hover) {
  .cap-list li:hover { transform: translateX(4px); box-shadow: var(--shadow-card); border-color: #D6DFEB; }
}
.cap-ok {
  width: 28px; height: 28px; border-radius: 50%; background: var(--blue-bg);
  display: flex; align-items: center; justify-content: center; flex: none;
}
.cap-ok svg { width: 15px; height: 15px; color: var(--blue); }
.cap-list strong { display: block; font-size: 15.5px; margin-bottom: 2px; }
.cap-list li div span { font-size: 13.5px; color: var(--text-2); }

/* ---------- 未来规划（规划中） ---------- */
#next { background: var(--bg); }
.next-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; max-width: 980px; margin: 0 auto; }
.next-tag {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--text-3);
  background: var(--bg); border: 1px solid var(--line); border-radius: 999px;
  padding: 2px 11px; margin-bottom: 16px;
}
.next-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.next-card p { font-size: 14px; color: var(--text-2); line-height: 1.75; }
.next-card:hover { transform: none; box-shadow: var(--shadow); border-color: var(--line); }

/* ---------- 联系区（深色收尾，与首屏书挡呼应） ---------- */
#contact {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, #10203F 0%, #0A1424 100%);
  padding: 96px 0 90px;
}
#contact::before {
  content: ""; position: absolute; left: 50%; top: 6%;
  width: 700px; height: 420px; transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(0, 122, 255, .22) 0%, transparent 66%);
  pointer-events: none;
}
#contact > .container { position: relative; z-index: 1; }
.contact-card {
  max-width: 780px; margin: 0 auto; text-align: center;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 24px; padding: 58px 40px 56px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
}
.contact-card h2 { font-size: 25px; color: #F5F8FD; }
.contact-card p { font-size: 15px; color: rgba(214, 226, 243, .72); margin: 10px 0 28px; }
#contact .btn-glow { margin-top: 4px; }

/* ---------- 页脚（承接深色收尾） ---------- */
footer {
  background: #0A1322;
  border-top: 1px solid rgba(255, 255, 255, .08);
}
.foot-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  padding-top: 26px; padding-bottom: 26px;
  color: #75849C; font-size: 13px;
}
.foot-links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.foot-links a { transition: color .2s; }
.foot-links a:hover { color: #DCE7F5; }
.foot-note { opacity: .8; }

/* ---------- 滚动 reveal（html.js 门控：JS 失败不白屏） ---------- */
html.js .reveal { opacity: 0; transform: translateY(14px); }
html.js .reveal.in { opacity: 1; transform: none; transition: opacity .5s ease, transform .5s ease; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-grid { gap: 40px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  /* 浮动示例卡仅在宽屏展示 */
  .float-card { display: none; }
}
@media (max-width: 768px) {
  section { padding: 52px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  #hero { padding: 40px 0 56px; }
  #hero h1 { font-size: clamp(30px, 8vw, 38px); }
  .hero-sub { font-size: 15.5px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .hero-trust { gap: 9px 14px; margin-top: 22px; }
  .hero-trust li { font-size: 13px; }
  .grid-3 { grid-template-columns: 1fr; gap: 14px; }
  .flow-steps { grid-template-columns: 1fr; gap: 12px; }
  .flow-step { padding: 18px 16px; }
  .next-grid { grid-template-columns: 1fr; gap: 14px; }
  .sec-head { margin-bottom: 30px; }
  .card { padding: 20px 18px; }
  .feat-ico { width: 44px; height: 44px; }
  .feat-ico svg { width: 21px; height: 21px; }
  .feat-card h3 { margin: 13px 0 6px; }
  .cap-list li { padding: 15px 16px; gap: 12px; }
  .role-card h3 { font-size: 16px; }

  /* 现场演示：单列化 */
  .demo-body { padding: 12px; }
  .demo-tabs { display: flex; width: 100%; justify-content: center; }
  .demo-tab { flex: 1; }
  .ds-grid, .ds-split { grid-template-columns: 1fr; }
  .work-row { padding: 11px 13px; }
  .todo-row { padding: 11px 13px; gap: 10px; }
  .todo-row p span { display: block; margin-top: 1px; }
  .ds-side { padding: 12px 14px; }
  #demo .sec-head { margin-bottom: 26px; }
  #contact { padding: 64px 0 56px; }

  /* 汉堡抽屉 */
  .menu-btn { display: flex; }
  .nav-cta { display: none; }
  .nav-inner { gap: 0; }
  .nav-links {
    display: none;
    position: fixed; top: 60px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch;
    gap: 0; padding: 8px 24px 18px;
    box-shadow: 0 18px 28px rgba(31, 35, 41, .12);
    border-bottom: 1px solid var(--line);
  }
  body.menu-open .nav-links { display: flex; }
  .nav-links a { padding: 13px 0; font-size: 16px; border-bottom: 1px solid #F0F1F3; color: var(--text-2); }
  .nav-links a:hover { color: var(--blue); }
  .nav-links a:last-child { border-bottom: 0; }
  .nav-admin { display: none; }
  .nav-admin-m { display: block; }

  /* 签名手机缩小（老板工作台） */
  .phone-scan { width: 224px; border-radius: 38px; }
  .phone-notch { top: 8px; width: 54px; height: 12px; }
  .phone-screen { border-radius: 35px; padding: 24px 10px 10px; gap: 6px; }
  .sb-icons svg { height: 9px; }
  .wb-stat { padding: 6px 3px 5px; }
  .wb-stat b { font-size: 15px; }
  .wb-row { padding: 6px 9px; margin-bottom: 5px; }
  .wb-row p b { font-size: 11px; }
  .wb-remind { padding: 5px 9px; }

  .contact-card { padding: 38px 20px 36px; }
  .foot-row { justify-content: center; text-align: center; }
}

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