/* =============================================================
   NEXA AI 智擎 · 主题样式
   设计概念：增长交易台（Growth Trading Desk）
   午夜深蓝 × 琥珀信号 × 翡翠增长色（仅用于正向数据）
   ============================================================= */

/* ---------- 设计令牌 ---------- */
:root{
  --bg-0:#05070D;
  --bg-1:#0A0F1A;
  --surface:#0F1626;
  --surface-2:#141D31;
  --line:rgba(154,171,204,.13);
  --line-strong:rgba(154,171,204,.26);

  --text-hi:#F2F5FC;
  --text-mid:#A7B2CB;
  --text-lo:#6E7A94;

  --amber:#FFB454;
  --amber-hot:#FF921F;
  --amber-dim:rgba(255,180,84,.13);
  --amber-line:rgba(255,180,84,.45);

  --jade:#3BDFB2;
  --jade-dim:rgba(59,223,178,.12);
  --danger:#FF6478;

  --grad-amber:linear-gradient(120deg,#FFC876 0%,#FFA13B 55%,#FF7A1A 100%);

  --mono:ui-monospace,"SF Mono","Cascadia Code","JetBrains Mono","Roboto Mono",Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;

  --container:1160px;
  --r-sm:10px; --r-md:16px; --r-lg:24px;
  --shadow-1:0 10px 34px rgba(2,4,10,.5);
  --shadow-glow:0 14px 44px rgba(255,160,50,.16);
  --sec-pad:clamp(76px,9vw,128px);
  --head-h:68px;
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{color-scheme:dark;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--head-h) + 24px)}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;line-height:1.75;
  color:var(--text-mid);
  background:var(--bg-0);
  overflow-x:hidden;
}
body::before{ /* 全局细网格 */
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:
    linear-gradient(rgba(154,171,204,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(154,171,204,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 0%,transparent 78%);
}
body::after{ /* 顶部琥珀光晕 */
  content:"";position:fixed;top:-320px;left:50%;transform:translateX(-50%);
  width:1200px;height:680px;z-index:-3;pointer-events:none;
  background:radial-gradient(closest-side,rgba(255,150,40,.14),transparent 70%);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--amber);text-decoration:none}
a:hover{color:#FFC876}
h1,h2,h3,h4,h5{color:var(--text-hi);line-height:1.28;margin:0 0 .5em;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1em}
::selection{background:var(--amber);color:#161006}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-0)}
::-webkit-scrollbar-thumb{background:#232D44;border-radius:8px;border:2px solid var(--bg-0)}
::-webkit-scrollbar-thumb:hover{background:#31405F}

.container{max-width:var(--container);margin:0 auto;padding:0 clamp(20px,4vw,32px)}
.section{padding:var(--sec-pad) 0;position:relative}
.section.alt{background:linear-gradient(180deg,transparent,rgba(15,22,38,.55) 18%,rgba(15,22,38,.55) 82%,transparent)}
.screen-reader-text{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 标签 / 标题系统 ---------- */
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--amber);
  display:inline-flex;align-items:center;gap:.6em;margin-bottom:18px;
}
.eyebrow::before{content:"//";color:var(--text-lo);letter-spacing:0}
.section-head{max-width:760px;margin-bottom:clamp(40px,5vw,60px)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}
.section-title{font-size:clamp(1.85rem,3.6vw,2.7rem);margin-bottom:.4em}
.section-title em{font-style:normal;background:var(--grad-amber);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:clamp(1rem,1.4vw,1.1rem);color:var(--text-mid);max-width:64ch}
.section-head.center .lede{margin-left:auto;margin-right:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  font-family:var(--sans);font-weight:600;font-size:.98rem;letter-spacing:.02em;
  padding:.85em 1.7em;border-radius:12px;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background-color .22s ease,color .22s ease;
}
.btn-primary{background:var(--grad-amber);color:#1A1206;box-shadow:0 8px 26px rgba(255,150,40,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(255,150,40,.4);color:#1A1206}
.btn-ghost{border-color:var(--line-strong);color:var(--text-hi);background:rgba(154,171,204,.04)}
.btn-ghost:hover{border-color:var(--amber-line);color:var(--text-hi);background:var(--amber-dim)}
.btn-sm{padding:.6em 1.25em;font-size:.9rem;border-radius:10px}
.btn-lg{padding:1em 2.1em;font-size:1.05rem}
.btn .arr{transition:transform .22s ease}
.btn:hover .arr{transform:translateX(3px)}

/* ---------- 顶部系统状态条 ---------- */
.statusbar{
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;
  color:var(--text-lo);border-bottom:1px solid var(--line);
  background:rgba(5,7,13,.6);
}
.statusbar .container{display:flex;align-items:center;gap:1.5em;height:34px;overflow:hidden}
.statusbar .dot{width:7px;height:7px;border-radius:50%;background:var(--jade);box-shadow:0 0 0 0 rgba(59,223,178,.5);animation:pulse 2.4s infinite;flex:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(59,223,178,.45)}70%{box-shadow:0 0 0 8px rgba(59,223,178,0)}100%{box-shadow:0 0 0 0 rgba(59,223,178,0)}}
.statusbar b{color:var(--text-mid);font-weight:500}
.statusbar .sb-item{white-space:nowrap}
.statusbar .sb-hide{margin-left:auto}
@media (max-width:760px){.statusbar .sb-hide{display:none}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,13,.72);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s ease,background-color .3s ease;
}
.site-header.scrolled{box-shadow:0 8px 30px rgba(2,4,10,.55);background:rgba(5,7,13,.86)}
.nav-inner{display:flex;align-items:center;gap:28px;height:var(--head-h)}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--text-hi);font-weight:700;letter-spacing:.03em;font-size:1.08rem}
.brand:hover{color:var(--text-hi)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:none;
  background:var(--grad-amber);color:#1A1206;
  display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:15px;
  box-shadow:0 4px 16px rgba(255,150,40,.35);
}
.brand .custom-logo{max-height:34px;width:auto}
.brand-sub{font-family:var(--mono);font-size:10px;letter-spacing:.28em;color:var(--text-lo);display:block;line-height:1.1;margin-top:2px}
.main-nav{margin-left:auto}
.main-nav ul{list-style:none;display:flex;gap:clamp(18px,2.6vw,36px);margin:0;padding:0}
.main-nav a{
  color:var(--text-mid);font-size:.96rem;font-weight:500;position:relative;padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background:var(--grad-amber);transition:width .25s ease;
}
.main-nav a:hover{color:var(--text-hi)}
.main-nav a:hover::after,.main-nav .current-menu-item a::after{width:100%}
.nav-cta{flex:none}
.nav-toggle{
  display:none;flex:none;width:42px;height:42px;border:1px solid var(--line-strong);
  border-radius:10px;background:transparent;cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--text-hi);
  transition:transform .25s ease,opacity .2s ease,top .25s ease;
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
body.nav-open .nav-toggle span:nth-child(1){top:20px;transform:rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){top:20px;transform:rotate(-45deg)}
.mobile-nav{
  display:none;position:fixed;z-index:55;left:0;right:0;top:calc(var(--head-h));bottom:0;
  background:rgba(5,7,13,.96);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:34px clamp(20px,5vw,40px);overflow-y:auto;
}
body.nav-open .mobile-nav{display:block}
.mobile-nav ul{list-style:none;margin:0;padding:0}
.mobile-nav li{border-bottom:1px solid var(--line)}
.mobile-nav a{display:block;padding:18px 4px;font-size:1.15rem;font-weight:600;color:var(--text-hi)}
.mobile-nav .btn{margin-top:26px;width:100%}
@media (max-width:920px){
  .main-nav,.nav-cta{display:none}
  .nav-toggle{display:block;margin-left:auto}
}
body.nav-open{overflow:hidden}

/* ---------- 首屏 Hero ---------- */
.hero{padding:clamp(64px,8vw,110px) 0 0;position:relative}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:clamp(36px,5vw,72px);align-items:center}
.hero-eyebrow{margin-bottom:22px}
.hero h1{
  font-size:clamp(2.35rem,5.2vw,3.9rem);line-height:1.16;letter-spacing:.015em;
  margin-bottom:.5em;text-wrap:balance;
}
.hero h1 em{font-style:normal;background:var(--grad-amber);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(1.02rem,1.5vw,1.16rem);max-width:56ch;margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-proof{
  font-family:var(--mono);font-size:12.5px;color:var(--text-lo);letter-spacing:.03em;
  display:flex;flex-wrap:wrap;gap:8px 22px;
}
.hero-proof b{color:var(--jade);font-weight:600}

/* 终端窗口（签名元素） */
.term{
  background:linear-gradient(180deg,#0D1424,#0A101D);
  border:1px solid var(--line-strong);border-radius:var(--r-md);
  box-shadow:var(--shadow-1),0 0 0 1px rgba(255,180,84,.05),0 30px 80px rgba(255,140,30,.07);
  overflow:hidden;
}
.term-head{
  display:flex;align-items:center;gap:8px;padding:12px 16px;
  border-bottom:1px solid var(--line);background:rgba(154,171,204,.03);
}
.term-dot{width:10px;height:10px;border-radius:50%}
.term-dot.d1{background:#FF6478}.term-dot.d2{background:var(--amber)}.term-dot.d3{background:var(--jade)}
.term-title{margin-left:8px;font-family:var(--mono);font-size:12px;color:var(--text-lo);letter-spacing:.08em}
.term-live{
  margin-left:auto;font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--jade);
  border:1px solid rgba(59,223,178,.35);background:var(--jade-dim);
  padding:2px 9px;border-radius:99px;display:inline-flex;align-items:center;gap:6px;
}
.term-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--jade);animation:pulse 2s infinite}
.term-body{padding:14px 16px 10px;min-height:284px;display:flex;flex-direction:column;justify-content:flex-end}
.feed{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.feed li{
  font-family:var(--mono);font-size:12.8px;line-height:1.55;
  display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 10px;
  animation:rowIn .45s ease both;
}
@keyframes rowIn{from{opacity:0;transform:translateY(-7px)}to{opacity:1;transform:none}}
.feed .t{color:var(--text-lo);flex:none}
.feed .mod{
  color:var(--amber);border:1px solid rgba(255,180,84,.3);background:var(--amber-dim);
  border-radius:6px;padding:0 7px;font-size:11px;line-height:1.7;flex:none;letter-spacing:.04em;
}
.feed .msg{color:var(--text-mid)}
.feed .delta{color:var(--jade);background:var(--jade-dim);border-radius:6px;padding:0 7px;font-size:11px;line-height:1.7;flex:none}
.term-caret{
  margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);
  font-family:var(--mono);font-size:12.5px;color:var(--text-lo);display:flex;align-items:center;gap:8px;
}
.term-caret .cursor{width:8px;height:15px;background:var(--amber);display:inline-block;animation:blink 1.05s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* 指标跑马灯 */
.marquee-band{margin-top:clamp(46px,6vw,72px);border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(10,15,26,.5)}
.marquee{overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;width:max-content;animation:scrollX 34s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes scrollX{to{transform:translateX(-50%)}}
.marquee-track ul{list-style:none;display:flex;margin:0;padding:0}
.marquee-track li{
  font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--text-lo);
  padding:15px 0;white-space:nowrap;display:flex;align-items:center;
}
.marquee-track li::after{content:"✦";color:var(--amber);opacity:.55;margin:0 26px;font-size:10px}
.marquee-track b{color:var(--text-hi);font-weight:600;margin-left:.5em}
.marquee-track b.up{color:var(--jade)}

/* ---------- 数据统计带 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(22px,3vw,40px)}
.stat{padding:6px 0 6px 22px;border-left:1px solid var(--line-strong);position:relative}
.stat::before{content:"";position:absolute;left:-1px;top:6px;width:1px;height:26px;background:var(--grad-amber)}
.stat-num{
  font-family:var(--mono);font-weight:700;color:var(--text-hi);
  font-size:clamp(2rem,3.6vw,2.9rem);line-height:1.12;letter-spacing:-.01em;
}
.stat-num .u{font-size:.5em;color:var(--amber);margin-left:2px;font-weight:600}
.stat-label{color:var(--text-lo);font-size:.92rem;margin-top:6px}

/* ---------- 服务矩阵 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2.4vw,26px)}
.card{
  background:linear-gradient(180deg,var(--surface),rgba(15,22,38,.6));
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:clamp(24px,2.6vw,30px);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--amber-line);box-shadow:var(--shadow-glow)}
.svc-icon{
  width:46px;height:46px;border-radius:12px;background:var(--amber-dim);
  border:1px solid rgba(255,180,84,.28);display:grid;place-items:center;margin-bottom:20px;
}
.svc-icon svg{width:22px;height:22px;stroke:var(--amber);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:1.16rem;margin-bottom:.55em}
.card p{font-size:.95rem;color:var(--text-mid);margin-bottom:16px}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin:0;padding:0;list-style:none}
.chips li{
  font-family:var(--mono);font-size:11px;letter-spacing:.05em;color:var(--text-lo);
  border:1px solid var(--line);border-radius:7px;padding:2px 9px;
}

/* ---------- 运营引擎（流程） ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(18px,2.4vw,26px);position:relative;counter-reset:step}
.steps::before{
  content:"";position:absolute;top:23px;left:4%;right:4%;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong) 12%,var(--line-strong) 88%,transparent);
}
.step{position:relative;padding-top:66px}
.step-no{
  position:absolute;top:0;left:0;width:46px;height:46px;border-radius:12px;
  background:var(--bg-0);border:1px solid var(--amber-line);
  display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:15px;color:var(--amber);
  box-shadow:0 0 0 6px var(--bg-0),0 6px 18px rgba(255,150,40,.15);
}
.step h3{font-size:1.1rem}
.step p{font-size:.94rem}
.step-dur{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--text-lo);display:block;margin-bottom:8px}

/* ---------- 为什么选择 / 数据面板 ---------- */
.why-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(36px,5vw,72px);align-items:center}
.feat{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.feat:last-child{border-bottom:0}
.feat-icon{
  flex:none;width:40px;height:40px;border-radius:10px;background:var(--jade-dim);
  border:1px solid rgba(59,223,178,.3);display:grid;place-items:center;
}
.feat-icon svg{width:19px;height:19px;stroke:var(--jade);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.feat h4{font-size:1.05rem;margin-bottom:.3em}
.feat p{font-size:.94rem;margin:0}
.panel{
  background:linear-gradient(180deg,#0E1526,#0B1120);
  border:1px solid var(--line-strong);border-radius:var(--r-md);
  padding:clamp(20px,2.6vw,28px);box-shadow:var(--shadow-1);
}
.panel-head{display:flex;align-items:center;gap:14px;margin-bottom:18px;flex-wrap:wrap}
.panel-title{font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;color:var(--text-mid)}
.legend{margin-left:auto;display:flex;gap:16px;font-family:var(--mono);font-size:11px;color:var(--text-lo)}
.legend i{width:9px;height:9px;border-radius:3px;display:inline-block;margin-right:6px;vertical-align:-1px}
.legend .l-amber i{background:var(--amber)}
.legend .l-gray i{background:#3A465F}
.panel svg{width:100%;height:auto;display:block}
.panel-chips{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.pchip{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:rgba(154,171,204,.03)}
.pchip .v{font-family:var(--mono);font-weight:700;font-size:1.25rem;color:var(--jade)}
.pchip .k{font-size:.8rem;color:var(--text-lo);margin-top:2px}

/* ---------- 客户案例 ---------- */
.case-top{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.case-ind{
  font-size:.82rem;font-weight:600;color:var(--amber);
  background:var(--amber-dim);border:1px solid rgba(255,180,84,.3);border-radius:8px;padding:3px 11px;
}
.case-ch{font-family:var(--mono);font-size:11.5px;color:var(--text-lo);letter-spacing:.05em}
.case-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px;padding-top:18px;border-top:1px dashed var(--line)}
.cm .v{font-family:var(--mono);font-weight:700;font-size:1.45rem;color:var(--jade);line-height:1.2}
.cm .k{font-size:.82rem;color:var(--text-lo);margin-top:3px}

/* ---------- 客户评价 ---------- */
.quote{position:relative;padding-top:8px}
.quote::before{
  content:"「";position:absolute;top:-26px;left:-6px;
  font-size:64px;line-height:1;color:var(--amber);opacity:.28;font-weight:700;
}
.quote p{color:var(--text-hi);font-size:1.02rem;line-height:1.85}
.quote-author{display:flex;align-items:center;gap:12px;margin-top:20px}
.quote-ava{
  width:40px;height:40px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,#22304F,#141D31);border:1px solid var(--line-strong);
  display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:14px;color:var(--amber);
}
.quote-author .n{color:var(--text-hi);font-weight:600;font-size:.94rem;line-height:1.35}
.quote-author .r{font-size:.82rem;color:var(--text-lo)}

/* ---------- 价格方案 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2.4vw,26px);align-items:stretch}
.plan{display:flex;flex-direction:column;position:relative}
.plan-tag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:#1A1206;font-weight:700;
  background:var(--grad-amber);padding:4px 14px;border-radius:99px;white-space:nowrap;
  box-shadow:0 6px 18px rgba(255,150,40,.35);
}
.plan.featured{
  border-color:var(--amber-line);
  background:linear-gradient(180deg,#151F38,#0F1728);
  box-shadow:0 0 0 1px rgba(255,180,84,.12),0 24px 60px rgba(255,140,30,.1);
}
.plan-name{font-size:1.05rem;color:var(--text-hi);font-weight:700}
.plan-for{font-size:.86rem;color:var(--text-lo);margin:4px 0 18px}
.plan-price{font-family:var(--mono);color:var(--text-hi);margin-bottom:20px;line-height:1}
.plan-price .n{font-size:2.35rem;font-weight:700}
.plan.featured .plan-price .n{background:var(--grad-amber);-webkit-background-clip:text;background-clip:text;color:transparent}
.plan-price .per{font-size:.85rem;color:var(--text-lo);margin-left:6px}
.plan ul{list-style:none;margin:0 0 26px;padding:18px 0 0;border-top:1px dashed var(--line);flex:1}
.plan li{
  font-size:.93rem;color:var(--text-mid);padding:6px 0 6px 26px;position:relative;
}
.plan li::before{content:"✓";position:absolute;left:2px;color:var(--jade);font-weight:700}
.plan li.dim{color:var(--text-lo)}
.plan li.dim::before{content:"—";color:var(--text-lo)}
.plan .btn{width:100%}
.plans-note{margin-top:22px;text-align:center;font-size:.85rem;color:var(--text-lo)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;gap:16px;
  padding:22px 4px;color:var(--text-hi);font-weight:600;font-size:1.03rem;
  transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--amber)}
.faq summary::after{
  content:"+";margin-left:auto;flex:none;width:30px;height:30px;border:1px solid var(--line-strong);
  border-radius:9px;display:grid;place-items:center;color:var(--amber);
  font-family:var(--mono);font-size:17px;transition:transform .25s ease,background-color .25s ease;
}
.faq details[open] summary::after{transform:rotate(45deg);background:var(--amber-dim)}
.faq .faq-a{padding:0 46px 24px 4px;color:var(--text-mid);font-size:.96rem}

/* ---------- 转化 CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;text-align:center;
  border:1px solid var(--amber-line);border-radius:var(--r-lg);
  padding:clamp(52px,7vw,88px) clamp(24px,5vw,72px);
  background:
    radial-gradient(ellipse 70% 120% at 50% -20%,rgba(255,150,40,.16),transparent 60%),
    linear-gradient(180deg,#101A30,#0A1120);
}
.cta-panel::before,.cta-panel::after{
  content:"";position:absolute;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:rgba(255,180,84,.4);
}
.cta-panel::before{content:"+ ";top:16px;left:20px}
.cta-panel::after{content:" +";bottom:16px;right:20px}
.cta-panel h2{font-size:clamp(1.8rem,3.6vw,2.6rem);margin-bottom:.45em}
.cta-panel .lede{margin:0 auto 34px}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.cta-contacts{
  display:flex;justify-content:center;flex-wrap:wrap;gap:10px 32px;
  font-family:var(--mono);font-size:13px;color:var(--text-lo);
}
.cta-contacts b{color:var(--text-hi);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(5,7,13,.7);margin-top:var(--sec-pad)}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:clamp(28px,4vw,56px);
  padding:clamp(52px,6vw,76px) 0 44px;
}
.footer-brand p{font-size:.92rem;color:var(--text-lo);max-width:34ch;margin:16px 0 0}
.footer-h{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;color:var(--text-lo);
  text-transform:uppercase;margin-bottom:18px;
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:11px}
.footer-col a{color:var(--text-mid);font-size:.94rem}
.footer-col a:hover{color:var(--amber)}
.footer-contact li{display:flex;gap:10px;font-size:.94rem;color:var(--text-mid)}
.footer-contact .k{font-family:var(--mono);font-size:12px;color:var(--text-lo);flex:none;width:44px;padding-top:2px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;justify-content:space-between;
  font-size:.84rem;color:var(--text-lo);
}
.footer-bottom a{color:var(--text-lo)}
.footer-bottom a:hover{color:var(--amber)}

/* ---------- 滚动显现 ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.d1{transition-delay:.08s}.js .reveal.d2{transition-delay:.16s}.js .reveal.d3{transition-delay:.24s}

/* ---------- 内页 / 博客 ---------- */
.page-hero{padding:clamp(64px,8vw,100px) 0 clamp(36px,5vw,56px);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(2rem,4.4vw,3.1rem);margin-bottom:.3em}
.page-hero .meta{font-family:var(--mono);font-size:12.5px;color:var(--text-lo);letter-spacing:.06em;display:flex;flex-wrap:wrap;gap:8px 20px}
.content-area{padding:clamp(44px,6vw,72px) 0 var(--sec-pad)}

.prose{max-width:760px;margin:0 auto;font-size:1.03rem;color:var(--text-mid)}
.prose h2{font-size:1.65rem;margin:2em 0 .7em;padding-left:16px;border-left:3px solid var(--amber)}
.prose h3{font-size:1.28rem;margin:1.8em 0 .6em}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose img{border-radius:var(--r-md);border:1px solid var(--line);margin:1.8em 0}
.prose blockquote{
  margin:1.8em 0;padding:18px 24px;border-left:3px solid var(--amber);
  background:var(--surface);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-hi);
}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:.15em .45em;color:var(--amber)}
.prose pre{background:#0B1120;border:1px solid var(--line-strong);border-radius:var(--r-md);padding:20px 22px;overflow-x:auto}
.prose pre code{background:none;border:0;padding:0;color:var(--text-mid)}
.prose ul,.prose ol{padding-left:1.4em}
.prose li{margin-bottom:.4em}
.prose hr{border:0;border-top:1px dashed var(--line-strong);margin:2.5em 0}
.prose table{width:100%;border-collapse:collapse;font-size:.94rem}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.prose th{color:var(--text-hi);background:var(--surface)}

.post-list{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2.4vw,26px)}
.post-card{display:flex;flex-direction:column;overflow:hidden;padding:0}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);background:linear-gradient(135deg,#16203A,#0C1322)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.post-card:hover .thumb img{transform:scale(1.05)}
.post-card .pc-body{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1}
.post-card .pc-meta{font-family:var(--mono);font-size:11.5px;color:var(--text-lo);letter-spacing:.08em;margin-bottom:12px}
.post-card h2,.post-card h3{font-size:1.12rem;line-height:1.5;margin-bottom:.5em}
.post-card h2 a,.post-card h3 a{color:var(--text-hi)}
.post-card h2 a:hover,.post-card h3 a:hover{color:var(--amber)}
.post-card p{font-size:.92rem;color:var(--text-lo);margin:0 0 18px}
.pc-more{margin-top:auto;font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--amber)}

.pagination{margin-top:52px;display:flex;justify-content:center}
.pagination .nav-links{display:flex;gap:8px;flex-wrap:wrap}
.pagination .page-numbers{
  min-width:40px;height:40px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:10px;color:var(--text-mid);
  font-family:var(--mono);font-size:14px;
}
.pagination .page-numbers.current{background:var(--grad-amber);color:#1A1206;border-color:transparent;font-weight:700}
.pagination a.page-numbers:hover{border-color:var(--amber-line);color:var(--text-hi)}

.post-nav{display:flex;justify-content:space-between;gap:16px;max-width:760px;margin:56px auto 0;padding-top:28px;border-top:1px solid var(--line)}
.post-nav a{font-size:.92rem;color:var(--text-mid);max-width:46%}
.post-nav a:hover{color:var(--amber)}
.post-nav .lbl{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--text-lo);margin-bottom:6px}

/* 搜索表单 */
.search-form{display:flex;gap:10px;max-width:520px}
.search-form input[type="search"]{
  flex:1;background:var(--surface);border:1px solid var(--line-strong);border-radius:12px;
  padding:.8em 1.1em;color:var(--text-hi);font-size:.96rem;font-family:var(--sans);
}
.search-form input[type="search"]:focus{outline:2px solid var(--amber);outline-offset:2px}
.search-form .search-submit{border:0;cursor:pointer}

/* 评论 */
.comments-area{max-width:760px;margin:64px auto 0;padding-top:40px;border-top:1px solid var(--line)}
.comments-area .comments-title,.comment-reply-title{font-size:1.3rem}
.comment-list{list-style:none;margin:0;padding:0}
.comment-list .comment{border-bottom:1px solid var(--line);padding:22px 0}
.comment-meta{font-family:var(--mono);font-size:12px;color:var(--text-lo);margin-bottom:8px}
.comment-author{color:var(--text-hi);font-weight:600;font-family:var(--sans);font-size:.95rem}
.comment-form label{display:block;font-size:.88rem;color:var(--text-lo);margin-bottom:6px}
.comment-form input[type="text"],.comment-form input[type="email"],.comment-form input[type="url"],.comment-form textarea{
  width:100%;background:var(--surface);border:1px solid var(--line-strong);border-radius:12px;
  padding:.75em 1em;color:var(--text-hi);font-family:var(--sans);font-size:.95rem;margin-bottom:16px;
}
.comment-form .submit{border:0;cursor:pointer}

/* 404 */
.error-404{min-height:60vh;display:grid;place-items:center;text-align:center;padding:var(--sec-pad) 0}
.err-code{
  font-family:var(--mono);font-weight:700;font-size:clamp(4rem,12vw,7.5rem);line-height:1;
  background:var(--grad-amber);-webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:10px;
}
.err-line{font-family:var(--mono);font-size:13px;color:var(--text-lo);letter-spacing:.1em;margin-bottom:26px}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero .term{max-width:640px}
  .steps{grid-template-columns:1fr 1fr;gap:34px 26px}
  .steps::before{display:none}
  .why-grid{grid-template-columns:1fr;gap:44px}
  .grid-3,.post-list{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .plans{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .plan.featured{order:-1}
}
@media (max-width:700px){
  .grid-3,.post-list{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr;gap:26px 18px}
  .steps{grid-template-columns:1fr}
  .case-metrics{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{flex:1;min-width:200px}
  .panel-chips{grid-template-columns:1fr 1fr}
}

/* ---------- 动效减弱 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .marquee-track{animation:none;flex-wrap:wrap;width:auto}
  .marquee{mask-image:none;-webkit-mask-image:none}
  .js .reveal{opacity:1;transform:none}
}