/* ============================================================
   深度企业入新培训系统 · new.fde.sd.cn
   品牌沿用深度探知：深墨蓝 #0c1420 / 品牌蓝 #14508c
   ============================================================ */

:root{
  --ink:#0c1420; --ink-2:#3d4b5c; --ink-3:#74839a; --ink-4:#9aa7b8;
  --brand:#14508c; --brand-2:#2f7fd1; --brand-3:#5aa7ef;
  --cyan:#12a8bd; --green:#1e9e6a; --amber:#d98324; --violet:#6b5ce7;
  --bg:#f4f7fb; --bg-2:#eef2f8; --card:#ffffff;
  --line:rgba(12,20,32,.09); --line-2:rgba(12,20,32,.055);
  --radius:16px; --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(12,20,32,.05), 0 12px 28px -18px rgba(12,20,32,.30);
  --shadow-2:0 2px 6px rgba(12,20,32,.06), 0 26px 54px -22px rgba(12,20,32,.34);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:var(--font);
  color:var(--ink); background:var(--bg);
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden; line-height:1.72;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input,textarea{font:inherit;color:inherit}
::selection{background:rgba(20,80,140,.18)}

.wrap{width:min(1200px,calc(100% - 44px));margin:0 auto}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.ico{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.ico--sm{width:18px;height:18px;stroke-width:1.9}

.skip{position:absolute;left:-9999px;top:0;background:#fff;color:var(--ink);padding:10px 16px;z-index:200}
.skip:focus{left:12px;top:12px}

:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:4px}

/* ───────────────── 导航 ───────────────── */
.header{
  position:fixed; inset:0 0 auto 0; z-index:90;
  background:rgba(12,20,32,.86);
  backdrop-filter:saturate(160%) blur(14px); -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .3s ease, box-shadow .3s ease;
}
.header.is-stuck{background:rgba(12,20,32,.96);box-shadow:0 10px 30px -18px rgba(0,0,0,.85)}
.header__in{display:flex;align-items:center;gap:22px;height:68px}

.brand{display:flex;align-items:center;gap:11px;color:#fff}
.brand__mark{width:34px;height:34px;flex:none}
.brand__text{display:flex;flex-direction:column;line-height:1.28}
.brand__text strong{font-size:15.5px;letter-spacing:.3px}
.brand__text small{font-size:11px;color:rgba(255,255,255,.56);letter-spacing:1.4px}

.nav{margin-left:auto}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__link{
  display:block;padding:9px 13px;border-radius:9px;font-size:14.5px;
  color:rgba(255,255,255,.78);transition:color .2s ease, background .2s ease;
}
.nav__link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav__link.is-active{color:#fff;background:rgba(255,255,255,.12)}

.header__cta{
  margin-left:14px;padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
  background:linear-gradient(135deg,var(--brand-2),var(--brand));color:#fff;
  box-shadow:0 8px 22px -12px rgba(20,80,140,.9);transition:transform .2s ease, box-shadow .2s ease;
}
.header__cta:hover{transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(20,80,140,1)}

.navtoggle{display:none;margin-left:auto;width:42px;height:42px;border:0;border-radius:10px;background:rgba(255,255,255,.08);cursor:pointer}
.navtoggle span{display:block;width:19px;height:2px;margin:3.5px auto;background:#fff;border-radius:2px;transition:transform .25s ease, opacity .2s ease}
.navtoggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.navtoggle.is-open span:nth-child(2){opacity:0}
.navtoggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ───────────────── 通用区块 ───────────────── */
.sec{padding:88px 0;position:relative}
.sec--soft{background:var(--bg-2)}
.sec--dark{background:var(--ink);color:#e8edf4}
.sec--dark .sec__title{color:#fff}
.sec--dark .sec__sub{color:rgba(232,237,244,.68)}

.sec__hd{max-width:760px;margin-bottom:44px}
.sec__hd--center{margin-left:auto;margin-right:auto;text-align:center}
.label{
  display:inline-block;font-size:12.5px;letter-spacing:2.4px;font-weight:600;
  color:var(--brand);margin-bottom:14px;text-transform:uppercase;
}
.label--light{color:var(--brand-3)}
.sec__title{
  font-size:clamp(26px,3.4vw,40px);line-height:1.28;font-weight:700;letter-spacing:-.4px;color:var(--ink);
}
.sec__title em{font-style:normal;color:var(--brand)}
.sec__sub{margin-top:16px;font-size:16px;color:var(--ink-2);line-height:1.85}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  background:linear-gradient(135deg,var(--brand-2),var(--brand));color:#fff;border:1px solid transparent;
  box-shadow:0 14px 30px -16px rgba(20,80,140,.95);transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 20px 38px -16px rgba(20,80,140,1)}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff;box-shadow:none}
.btn--ghost:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.5)}
.btn--dark{background:var(--ink);box-shadow:0 14px 30px -18px rgba(12,20,32,.9)}
.btn--sm{padding:9px 18px;font-size:14px}
.btn--block{width:100%}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(20,80,140,.22)}

/* ───────────────── 首屏 ───────────────── */
.hero{
  position:relative;padding:132px 0 76px;overflow:hidden;color:#e9eef6;
  background:
    radial-gradient(1100px 520px at 78% -8%,rgba(47,127,209,.30),transparent 62%),
    radial-gradient(820px 460px at 8% 8%,rgba(18,168,189,.20),transparent 60%),
    linear-gradient(168deg,#0a111c 0%,#0c1420 46%,#101c2c 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 22%,#000,transparent 74%);
  -webkit-mask-image:radial-gradient(circle at 50% 22%,#000,transparent 74%);
}
.hero__in{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}

.hero__tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(90,167,239,.14);border:1px solid rgba(90,167,239,.32);color:#bcdcf8;
  font-size:13px;letter-spacing:.6px;
}
.hero__tag i{width:6px;height:6px;border-radius:50%;background:#5aa7ef;box-shadow:0 0 0 4px rgba(90,167,239,.2)}
.hero h1{
  margin-top:22px;font-size:clamp(30px,4.4vw,54px);line-height:1.16;font-weight:800;letter-spacing:-1px;color:#fff;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(96deg,#5aa7ef,#12a8bd 62%,#2f7fd1);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__lead{margin-top:20px;font-size:17px;line-height:1.85;color:rgba(233,238,246,.76);max-width:640px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

.hero__stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:2px;margin-top:48px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:26px;
}
.hero__stats div strong{display:block;font-size:clamp(21px,2.4vw,29px);font-weight:700;color:#fff;letter-spacing:-.5px}
.hero__stats div span{font-size:13px;color:rgba(233,238,246,.58)}

/* 首屏右侧：知识检索预览 */
.hero__panel{
  position:relative;border-radius:20px;padding:20px;
  background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.028));
  border:1px solid rgba(255,255,255,.14);box-shadow:0 40px 80px -40px rgba(0,0,0,.9);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.hero__panel h3{font-size:13px;color:rgba(255,255,255,.62);letter-spacing:1.2px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.hero__panel h3 i{width:7px;height:7px;border-radius:50%;background:#12a8bd;box-shadow:0 0 0 4px rgba(18,168,189,.18)}
.trace{display:grid;gap:10px}
.trace__q{
  padding:11px 14px;border-radius:12px;background:rgba(90,167,239,.16);border:1px solid rgba(90,167,239,.3);
  font-size:14px;color:#dcebf9;
}
.trace__row{
  display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;
  padding:11px 13px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);
}
.trace__row > span:nth-child(2){min-width:0}
.trace__no{
  width:22px;height:22px;border-radius:6px;display:grid;place-items:center;flex:none;
  font-size:11.5px;font-weight:700;color:#0c1420;background:#5aa7ef;
}
.trace__no:nth-child(1){background:#12a8bd}
.trace__row b{display:block;font-size:13.5px;font-weight:600;color:#eef3f9;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.trace__row em{display:block;font-style:normal;font-size:12px;color:rgba(233,238,246,.55);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.trace__score{font-family:var(--mono);font-size:12.5px;color:#7ee0b8}
.hero__panel footer{margin-top:14px;font-size:12.5px;color:rgba(233,238,246,.5);display:flex;align-items:center;gap:7px}
.hero__panel footer i{width:5px;height:5px;border-radius:50%;background:#7ee0b8}

/* ───────────────── 痛点 ───────────────── */
.pains{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pain{padding:26px 22px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-1)}
.pain__k{
  display:inline-grid;place-items:center;width:40px;height:40px;border-radius:11px;margin-bottom:16px;
  background:rgba(217,131,36,.10);color:var(--amber);
}
.pain:nth-child(2) .pain__k{background:rgba(47,127,209,.10);color:var(--brand-2)}
.pain:nth-child(3) .pain__k{background:rgba(107,92,231,.10);color:var(--violet)}
.pain:nth-child(4) .pain__k{background:rgba(18,168,189,.10);color:var(--cyan)}
.pain h3{font-size:16.5px;font-weight:700;margin-bottom:9px;line-height:1.5}
.pain p{font-size:14.2px;color:var(--ink-2);line-height:1.8}

/* ───────────────── 三大支柱 ───────────────── */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pillar{padding:32px 28px;border-radius:var(--radius);position:relative;overflow:hidden}
.pillar::after{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;
  background:linear-gradient(90deg,var(--brand-2),var(--cyan));
}
.pillar:nth-child(2)::after{background:linear-gradient(90deg,var(--cyan),var(--green))}
.pillar:nth-child(3)::after{background:linear-gradient(90deg,var(--green),var(--brand-2))}
.pillar__ico{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(140deg,rgba(47,127,209,.14),rgba(18,168,189,.14));color:var(--brand);
}
.pillar:nth-child(2) .pillar__ico{background:linear-gradient(140deg,rgba(18,168,189,.14),rgba(30,158,106,.14));color:var(--cyan)}
.pillar:nth-child(3) .pillar__ico{background:linear-gradient(140deg,rgba(30,158,106,.14),rgba(47,127,209,.14));color:var(--green)}
.pillar__ico .ico{width:26px;height:26px}
.pillar h3{font-size:19px;font-weight:700;margin-bottom:10px}
.pillar>p{font-size:14.5px;color:var(--ink-2);line-height:1.85}
.pillar ul{margin-top:18px;display:grid;gap:9px}
.pillar li{display:flex;gap:9px;font-size:14px;color:var(--ink-2);line-height:1.7}
.pillar li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-3);flex:none;margin-top:9px}

/* ───────────────── 知识库 WIKI ───────────────── */
.wiki{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:start}
.tree{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.tree__hd{
  display:flex;align-items:center;gap:9px;padding:15px 18px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(20,80,140,.05),transparent);font-size:13.5px;font-weight:600;color:var(--ink-2);
}
.tree__hd .ico{width:18px;height:18px;color:var(--brand)}
.tree ul{padding:10px 12px 16px}
.tree li{margin:2px 0}
.tree__folder{
  display:flex;align-items:center;gap:9px;padding:9px 11px;border-radius:9px;font-size:14.5px;font-weight:600;color:var(--ink);
  transition:background .18s ease;
}
.tree__folder:hover{background:rgba(20,80,140,.05)}
.tree__folder .cnt{margin-left:auto;font-size:11.5px;color:var(--ink-4);font-family:var(--mono)}
.tree__file{display:flex;align-items:center;gap:9px;padding:8px 11px 8px 34px;border-radius:9px;font-size:14px;color:var(--ink-2)}
.tree__file:hover{background:rgba(20,80,140,.05);color:var(--ink)}
.tree__file .ico{width:15px;height:15px;color:var(--brand-3)}
.tree__file .badge{margin-left:auto;font-size:11px;padding:2px 8px;border-radius:999px;background:rgba(30,158,106,.12);color:var(--green)}

.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.chip{
  padding:6px 13px;border-radius:999px;font-size:13px;background:var(--card);
  border:1px solid var(--line);color:var(--ink-2);
}

/* ───────────────── AI 演示 ───────────────── */
.demo{
  background:var(--ink);color:#e8edf4;position:relative;overflow:hidden;
}
.demo::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 420px at 22% 0%,rgba(47,127,209,.20),transparent 62%),
             radial-gradient(700px 380px at 88% 100%,rgba(18,168,189,.16),transparent 60%);
}
.demo .wrap{position:relative}
.demo .sec__title{color:#fff}
.demo .sec__sub{color:rgba(232,237,244,.7)}
.demo__hd{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;flex-wrap:wrap;margin-bottom:34px}
.demo__note{
  font-size:13px;color:rgba(232,237,244,.62);max-width:420px;line-height:1.75;
  border-left:2px solid rgba(90,167,239,.5);padding-left:14px;
}

.demobox{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
.dchat{
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.12);border-radius:18px;
  display:flex;flex-direction:column;min-height:520px;overflow:hidden;
}
.dchat__hd{
  display:flex;align-items:center;gap:11px;padding:15px 18px;border-bottom:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.03);
}
.dchat__hd .avatar{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,var(--brand-2),var(--cyan));color:#fff;font-size:12px;font-weight:700;
}
.dchat__hd b{font-size:14.5px;display:block}
.dchat__hd em{font-style:normal;font-size:12px;color:rgba(232,237,244,.55)}
.dchat__body{flex:1;padding:18px;display:flex;flex-direction:column;gap:14px;overflow-y:auto}
.msg{display:flex;gap:10px;max-width:88%}
.msg--me{align-self:flex-end;flex-direction:row-reverse}
.msg__av{
  width:28px;height:28px;border-radius:8px;flex:none;display:grid;place-items:center;font-size:11px;font-weight:700;
  background:linear-gradient(135deg,var(--brand-2),var(--cyan));color:#fff;
}
.msg--me .msg__av{background:rgba(255,255,255,.14);color:#dbe6f3}
.bubble{
  padding:12px 15px;border-radius:14px;font-size:14.4px;line-height:1.8;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);color:#e6edf6;
}
.msg--me .bubble{background:linear-gradient(135deg,rgba(47,127,209,.34),rgba(18,168,189,.26));border-color:rgba(90,167,239,.34)}
.bubble h4{font-size:14px;margin-bottom:6px;color:#fff}
.bubble p{margin-bottom:8px}
.bubble p:last-child{margin-bottom:0}
.bubble ul{margin:6px 0 8px;display:grid;gap:5px}
.bubble li{display:flex;gap:8px;font-size:14px;line-height:1.72}
.bubble li::before{content:"▸";color:#5aa7ef;flex:none}
.cite{
  display:inline-flex;align-items:center;gap:4px;margin:0 3px;padding:1px 7px;border-radius:6px;
  background:rgba(90,167,239,.18);border:1px solid rgba(90,167,239,.32);color:#a9d3f7;font-size:12px;
  font-family:var(--mono);cursor:pointer;vertical-align:middle;
}
.cite:hover{background:rgba(90,167,239,.3)}
.bubble__src{
  margin-top:10px;padding-top:10px;border-top:1px dashed rgba(255,255,255,.14);
  font-size:12.5px;color:rgba(232,237,244,.58);
}
.bubble__src b{color:#9fd4ff;font-weight:600}

.dchat__foot{border-top:1px solid rgba(255,255,255,.1);padding:12px 14px;background:rgba(0,0,0,.16)}
.quick{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:11px}
.quick button{
  padding:6px 12px;border-radius:999px;font-size:12.8px;cursor:pointer;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);color:rgba(232,237,244,.85);
  transition:background .18s ease,border-color .18s ease;
}
.quick button:hover{background:rgba(90,167,239,.2);border-color:rgba(90,167,239,.4)}
.dchat form{display:flex;gap:9px}
.dchat input{
  flex:1;padding:11px 15px;border-radius:11px;font-size:14.4px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);color:#e9eef6;
}
.dchat input::placeholder{color:rgba(232,237,244,.42)}
.dchat input:focus{outline:none;border-color:rgba(90,167,239,.6);background:rgba(255,255,255,.1)}
.dchat form button{
  padding:0 20px;border:0;border-radius:11px;cursor:pointer;font-size:14.4px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--brand-2),var(--brand));
}

/* 检索过程面板 */
.dpanel{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:18px;
  padding:18px;display:flex;flex-direction:column;gap:12px;
}
.dpanel__hd{display:flex;align-items:center;gap:9px;font-size:13px;color:rgba(232,237,244,.62);letter-spacing:.8px}
.dpanel__hd .ico{width:16px;height:16px;color:#5aa7ef}
.dstep{
  padding:12px 14px;border-radius:12px;background:rgba(0,0,0,.22);border:1px solid rgba(255,255,255,.08);
}
.dstep b{display:block;font-size:13.5px;color:#fff;margin-bottom:5px}
.dstep p{font-size:12.8px;color:rgba(232,237,244,.62);line-height:1.7}
.dstep ul{margin-top:8px;display:grid;gap:6px}
.dstep li{display:flex;gap:9px;align-items:flex-start;font-size:12.8px;color:rgba(232,237,244,.78)}
.dstep li i{
  font-style:normal;font-family:var(--mono);font-size:11px;padding:1px 6px;border-radius:5px;flex:none;margin-top:2px;
  background:rgba(90,167,239,.18);color:#a9d3f7;
}
.dstep li span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}
.dstep li em{font-style:normal;margin-left:auto;font-family:var(--mono);font-size:11.5px;color:#7ee0b8;flex:none}
.dstep__bar{height:4px;border-radius:3px;background:rgba(255,255,255,.1);overflow:hidden;margin-top:9px}
.dstep__bar span{display:block;height:100%;background:linear-gradient(90deg,var(--brand-2),var(--cyan))}
.dpanel__foot{margin-top:auto;font-size:12px;color:rgba(232,237,244,.5);line-height:1.7}

/* ───────────────── 7 天日程 ───────────────── */
.days{display:grid;grid-template-columns:repeat(7,1fr);gap:12px}
.day{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 16px;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:9px;position:relative;overflow:hidden;
  transition:transform .22s ease, box-shadow .22s ease;
}
.day:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.day__n{
  font-family:var(--mono);font-size:12px;color:var(--brand);letter-spacing:1px;font-weight:700;
}
.day h4{font-size:15.5px;font-weight:700;line-height:1.5}
.day p{font-size:13.2px;color:var(--ink-2);line-height:1.75}
.day__tag{
  margin-top:auto;padding-top:10px;font-size:11.5px;color:var(--brand-3);border-top:1px dashed var(--line);
}
.day--k1 .day__n{color:var(--brand)}
.day--k2 .day__n{color:var(--cyan)}
.day--k3 .day__n{color:var(--green)}

.curve{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:26px}
.curve__i{padding:20px 20px;border-radius:var(--radius-sm);background:var(--card);border:1px solid var(--line)}
.curve__i b{display:block;font-size:14.5px;margin-bottom:6px}
.curve__i p{font-size:13.3px;color:var(--ink-2);line-height:1.75}

/* ───────────────── 架构 ───────────────── */
.arch{display:grid;gap:12px}
.layer{
  display:grid;grid-template-columns:190px 1fr;gap:26px;align-items:center;
  padding:20px 24px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.layer__hd b{display:block;font-size:15.5px;font-weight:700}
.layer__hd span{font-size:12px;color:var(--ink-4);letter-spacing:1.2px}
.layer__items{display:flex;flex-wrap:wrap;gap:9px}
.layer__items span{
  padding:6px 13px;border-radius:8px;font-size:13.2px;color:var(--ink-2);
  background:var(--bg-2);border:1px solid var(--line);
}
.layer--app{background:linear-gradient(100deg,rgba(20,80,140,.05),rgba(18,168,189,.05))}
.layer--app .layer__items span{background:rgba(20,80,140,.08);border-color:rgba(20,80,140,.16)}
.layer--kb{background:linear-gradient(100deg,rgba(18,168,189,.05),rgba(30,158,106,.05))}
.layer--kb .layer__items span{background:rgba(18,168,189,.09);border-color:rgba(18,168,189,.18)}
.arch__note{
  display:flex;gap:12px;align-items:flex-start;margin-top:22px;padding:18px 20px;border-radius:var(--radius);
  background:rgba(20,80,140,.05);border:1px solid rgba(20,80,140,.14);font-size:14px;color:var(--ink-2);line-height:1.8;
}
.arch__note .ico{color:var(--brand);margin-top:3px}

/* ───────────────── 场景 ───────────────── */
.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene{padding:28px 26px}
.scene__tag{
  display:inline-block;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(47,127,209,.10);color:var(--brand);margin-bottom:16px;
}
.scene:nth-child(2) .scene__tag{background:rgba(30,158,106,.11);color:var(--green)}
.scene:nth-child(3) .scene__tag{background:rgba(217,131,36,.12);color:var(--amber)}
.scene h3{font-size:18px;font-weight:700;margin-bottom:10px}
.scene>p{font-size:14.4px;color:var(--ink-2);line-height:1.82}
.scene__flow{margin-top:18px;display:grid;gap:9px}
.scene__flow li{
  display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-2);line-height:1.7;
  padding:9px 12px;border-radius:9px;background:var(--bg-2);
}
.scene__flow li b{font-family:var(--mono);font-size:11.5px;color:var(--brand);flex:none;margin-top:2px}

/* ───────────────── 指标 ───────────────── */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric{
  padding:28px 24px;border-radius:var(--radius);text-align:left;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
}
.metric b{display:block;font-size:clamp(28px,3.4vw,40px);font-weight:800;letter-spacing:-1px;line-height:1.1;
  background:linear-gradient(96deg,#5aa7ef,#12a8bd);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric span{display:block;margin-top:8px;font-size:14.5px;color:#e6edf6;font-weight:600}
.metric p{margin-top:6px;font-size:12.8px;color:rgba(232,237,244,.55);line-height:1.7}

/* ───────────────── 部署形态 ───────────────── */
.deploys{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.deploy{padding:28px 26px}
.deploy__tag{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(20,80,140,.09);color:var(--brand);margin-bottom:14px;
}
.deploy:nth-child(2) .deploy__tag{background:rgba(30,158,106,.11);color:var(--green)}
.deploy:nth-child(3) .deploy__tag{background:rgba(18,168,189,.12);color:var(--cyan)}
.deploy h3{font-size:18px;font-weight:700;margin-bottom:10px}
.deploy>p{font-size:14.3px;color:var(--ink-2);line-height:1.82}
.deploy__fit{
  display:block;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:12.8px;color:var(--ink-3);
}

/* ───────────────── 实施步骤 ───────────────── */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:s}
.step{
  position:relative;padding:24px 20px 24px 20px;border-radius:var(--radius);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.step::before{
  counter-increment:s;content:"0" counter(s);
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand);
  display:block;margin-bottom:12px;letter-spacing:1px;
}
.step h3{font-size:15.5px;font-weight:700;margin-bottom:8px}
.step p{font-size:13.3px;color:var(--ink-2);line-height:1.75}

/* ───────────────── FAQ ───────────────── */
.faq{display:grid;gap:12px;max-width:860px}
.qa{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-1)}
.qa summary{
  list-style:none;cursor:pointer;padding:17px 50px 17px 22px;position:relative;
  font-size:15.5px;font-weight:600;color:var(--ink);
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--ink-4);border-bottom:2px solid var(--ink-4);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s ease;
}
.qa[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.qa__body{padding:0 22px 20px;font-size:14.6px;color:var(--ink-2);line-height:1.85}

/* ───────────────── CTA ───────────────── */
.cta{background:var(--ink);color:#e8edf4;padding:82px 0;position:relative;overflow:hidden}
.cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(800px 400px at 20% 0%,rgba(47,127,209,.22),transparent 60%),
             radial-gradient(700px 380px at 85% 90%,rgba(18,168,189,.16),transparent 60%);
}
.cta .wrap{position:relative}
.cta__top{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;margin-bottom:40px}
.cta h2{font-size:clamp(26px,3.4vw,40px);line-height:1.28;font-weight:700;color:#fff}
.cta__note{font-size:14px;color:rgba(232,237,244,.62);line-height:1.8}
.cta__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ctacard{
  padding:26px 24px;border-radius:var(--radius);
  background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.12);
}
.ctacard h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:10px}
.ctacard p{font-size:14px;color:rgba(232,237,244,.68);line-height:1.8}
.ctacard ul{margin-top:12px;display:grid;gap:7px}
.ctacard li{display:flex;gap:9px;font-size:13.6px;color:rgba(232,237,244,.78);line-height:1.7}
.ctacard li::before{content:"✓";color:#7ee0b8;flex:none}
.contact{
  margin-top:26px;padding:24px 26px;border-radius:var(--radius);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;
}
.contact__item{display:flex;align-items:center;gap:12px}
.contact__item .ico{color:#5aa7ef}
.contact__item b{display:block;font-size:15.5px;color:#fff;font-weight:600}
.contact__item span{font-size:12.5px;color:rgba(232,237,244,.55)}

/* ───────────────── 页脚 ───────────────── */
.footer{background:#080d15;color:rgba(232,237,244,.6);padding:56px 0 26px;font-size:13.5px}
.footer__in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer .brand{margin-bottom:14px}
.footer__corp{font-size:13.5px;color:rgba(232,237,244,.75);margin-bottom:10px}
.footer__desc{max-width:420px;line-height:1.85;font-size:13px}
.footer__hd{font-size:13px;letter-spacing:1.4px;color:#fff;margin-bottom:14px;font-weight:600}
.footer__col ul{display:grid;gap:9px}
.footer__col a:hover{color:#5aa7ef}
.footer__bar{padding-top:22px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12.5px;color:rgba(232,237,244,.45)}

/* ───────────────── 进场动画 ───────────────── */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ───────────────── 响应式 ───────────────── */
@media (max-width:1080px){
  .hero__in{grid-template-columns:1fr;gap:40px}
  .hero__panel{max-width:640px}
  .pains,.metrics{grid-template-columns:repeat(2,1fr)}
  .pillars,.scenes,.deploys,.cta__grid{grid-template-columns:1fr}
  .days{grid-template-columns:repeat(4,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .demobox{grid-template-columns:1fr}
  .wiki{grid-template-columns:1fr;gap:30px}
  .curve{grid-template-columns:repeat(2,1fr)}
  .footer__in{grid-template-columns:1fr 1fr}
}

@media (max-width:860px){
  .nav{
    position:fixed;inset:68px 0 auto 0;margin:0;background:rgba(10,17,28,.98);
    border-bottom:1px solid rgba(255,255,255,.1);padding:14px 22px 22px;display:none;
  }
  .nav.is-open{display:block}
  .nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .nav__link{padding:12px 14px;font-size:15.5px}
  .navtoggle{display:block}
  .header__cta{margin:14px 0 0;display:block;text-align:center}
  .sec{padding:64px 0}
  .hero{padding:108px 0 60px}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:18px 8px}
  .layer{grid-template-columns:1fr;gap:12px}
  .footer__in{grid-template-columns:1fr}
}

@media (max-width:560px){
  .wrap{width:calc(100% - 32px)}
  .pains,.metrics,.days,.steps,.curve{grid-template-columns:1fr}
  .days{grid-template-columns:repeat(2,1fr)}
  .hero__actions .btn{flex:1 1 100%}
  .dchat{min-height:460px}
  .msg{max-width:96%}
  .sec__hd{margin-bottom:30px}
  .brand__text small{display:none}
  .footer__bar{flex-direction:column;gap:8px}
}