/* ============================================================
   超级硬装云帆大师版 · 官网样式
   设计基调：深空蓝黑 / 青蓝渐变 / 细网格 / 克制的玻璃质感
   ============================================================ */

:root{
  --bg:#05080f;
  --bg-soft:#080d18;
  --panel:rgba(255,255,255,.035);
  --panel-2:rgba(255,255,255,.058);
  --line:rgba(140,178,238,.12);
  --line-strong:rgba(110,205,255,.30);
  --text:#eaf1ff;
  --muted:#a0b1cf;
  --faint:#6c7e9e;
  --cyan:#5be7ff;
  --blue:#6c8cff;
  --violet:#b07cff;
  --warm:#ff9a6b;
  --grad:linear-gradient(100deg,#5be7ff 0%,#6c8cff 52%,#b07cff 100%);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --wrap:1200px;
  --radius:16px;
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 20px)}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0}
::selection{background:rgba(91,231,255,.28);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
code,.mono{font-family:var(--mono)}
.wrap{width:min(calc(100% - 48px),var(--wrap));margin-inline:auto}

.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--cyan);color:#04121c;padding:10px 18px;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

/* ---------- 背景氛围 ---------- */
.ambient{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden;background:
  radial-gradient(1100px 620px at 12% -8%,rgba(42,102,190,.16),transparent 62%),
  radial-gradient(900px 700px at 96% 8%,rgba(103,72,190,.13),transparent 60%),
  linear-gradient(180deg,#05080f 0%,#060a14 45%,#04070e 100%)}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.28}
.orb-a{width:520px;height:520px;left:-180px;top:-160px;background:#1b6fb5}
.orb-b{width:460px;height:460px;right:-160px;top:18%;background:#5a3fa8}
.orb-c{width:600px;height:600px;left:32%;bottom:-320px;background:#0d5c7a;opacity:.16}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:10px;font-size:14px;font-weight:600;
  letter-spacing:.01em;white-space:nowrap;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background .22s ease;
}
.btn svg{width:16px;height:16px}
.btn-sm{padding:9px 17px;font-size:13px;border-radius:9px}
.btn-lg{padding:15px 28px;font-size:15px;border-radius:11px}
.btn-primary{
  background:var(--grad);color:#04101c;
  box-shadow:0 6px 26px rgba(76,156,255,.24),inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(76,170,255,.38),inset 0 1px 0 rgba(255,255,255,.45)}
.btn-glass{border:1px solid var(--line-strong);background:rgba(255,255,255,.035);color:var(--text);backdrop-filter:blur(10px)}
.btn-glass:hover{transform:translateY(-2px);border-color:rgba(110,220,255,.6);background:rgba(91,231,255,.08)}
.btn-ghost{color:var(--muted)}
.btn-ghost:hover{color:var(--text);background:rgba(255,255,255,.05)}
.glass{background:linear-gradient(160deg,rgba(20,32,54,.86),rgba(9,16,30,.9));border:1px solid var(--line);backdrop-filter:blur(18px);box-shadow:0 20px 60px rgba(0,0,0,.42),inset 0 1px 0 rgba(255,255,255,.05)}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.kicker{display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:11px;letter-spacing:.22em;color:var(--cyan);text-transform:uppercase;margin-bottom:20px}
.kicker span{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:22px;padding:0 6px;border:1px solid rgba(91,231,255,.32);border-radius:5px;font-size:10px;letter-spacing:.08em;color:var(--cyan);background:rgba(91,231,255,.06)}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;height:var(--header-h);border-bottom:1px solid transparent;transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease}
.site-header.is-scrolled{background:rgba(5,9,17,.78);backdrop-filter:blur(20px) saturate(150%);border-bottom-color:var(--line)}
.header-inner{height:100%;display:flex;align-items:center;gap:36px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:36px;height:36px;display:block;filter:drop-shadow(0 0 10px rgba(91,231,255,.28))}
.brand-mark svg{width:100%;height:100%}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.04em}
.brand-text em{font-style:normal;font-size:10.5px;letter-spacing:.18em;color:var(--faint);font-family:var(--mono);margin-top:3px}
.nav{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav a{font-size:13.5px;color:var(--muted);position:relative;padding:6px 0;transition:color .2s ease}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:1px;background:var(--grad);transition:right .25s ease}
.nav a:hover,.nav a.is-active{color:var(--text)}
.nav a:hover::after,.nav a.is-active::after{right:0}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:9px;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:17px;height:1.5px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s 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)}

/* ---------- HERO ---------- */
.hero{position:relative;padding-top:clamp(48px,6vw,88px);overflow:hidden}
.hero-grid{position:absolute;inset:0 0 auto;height:760px;pointer-events:none;
  background-image:linear-gradient(rgba(120,180,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(120,180,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 70% 62% at 62% 34%,#000 0%,transparent 78%);
  mask-image:radial-gradient(ellipse 70% 62% at 62% 34%,#000 0%,transparent 78%)}
.hero-inner{display:grid;grid-template-columns:1.02fr 1fr;gap:32px;align-items:center;position:relative}
.hero-copy{position:relative;z-index:2;padding-bottom:26px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 14px;border:1px solid var(--line-strong);border-radius:100px;background:rgba(91,231,255,.05);font-size:12px;letter-spacing:.06em;color:var(--muted);margin-bottom:30px}
.pulse-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 0 rgba(91,231,255,.55);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(91,231,255,.5)}70%{box-shadow:0 0 0 9px rgba(91,231,255,0)}100%{box-shadow:0 0 0 0 rgba(91,231,255,0)}}
.hero h1{font-size:clamp(2.7rem,5.1vw,4.35rem);line-height:1.18;letter-spacing:-.035em;font-weight:700;margin-bottom:24px}
.hero-lede{max-width:530px;font-size:16px;line-height:1.9;color:var(--muted);margin-bottom:36px}
.hero-lede code{font-size:13px;padding:3px 8px;border-radius:6px;background:rgba(91,231,255,.09);border:1px solid rgba(91,231,255,.18);color:var(--cyan);white-space:nowrap}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:12.5px;color:var(--faint)}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.tick{width:13px;height:13px;display:inline-block;border:1px solid rgba(91,231,255,.5);border-radius:50%;position:relative;flex:none}
.tick::after{content:"";position:absolute;width:5px;height:2.5px;border-left:1.4px solid var(--cyan);border-bottom:1.4px solid var(--cyan);transform:rotate(-45deg);left:3px;top:3.5px}

/* 主视觉 */
.hero-visual{position:relative;min-height:600px;isolation:isolate}
.visual-halo{position:absolute;inset:8% 2% 10%;background:radial-gradient(ellipse at 50% 45%,rgba(64,140,255,.20),transparent 66%);filter:blur(28px);z-index:-1}
.iso-scene{width:100%;max-width:620px;margin:0 auto;filter:drop-shadow(0 26px 60px rgba(0,0,0,.5))}
.scan-line{animation:scan 6s ease-in-out infinite alternate}
@keyframes scan{0%{transform:translateY(196px);opacity:0}12%{opacity:1}88%{opacity:1}100%{transform:translateY(452px);opacity:0}}
.anchor{animation:blink 3s ease-in-out infinite}
.anchor-2{animation-delay:1s}
.anchor-3{animation-delay:2s}
@keyframes blink{0%,100%{opacity:.45}50%{opacity:1}}
.float-tag{position:absolute;z-index:3;padding:9px 13px;border:1px solid var(--line);border-radius:9px;background:rgba(9,17,31,.82);backdrop-filter:blur(12px);box-shadow:0 12px 34px rgba(0,0,0,.4);animation:floaty 6s ease-in-out infinite;display:flex;flex-direction:column;gap:1px}
.float-tag .tag-k{font-family:var(--mono);font-size:9px;letter-spacing:.16em;color:var(--cyan)}
.float-tag strong{font-size:12px;font-weight:500;color:var(--text);letter-spacing:.02em}
.tag-a{left:-14px;top:22%;}
.tag-b{right:-16px;top:12%;animation-delay:-2.5s}
.tag-b .tag-k{color:var(--violet)}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.hero-panel{position:absolute;right:-26px;bottom:96px;width:258px;border-radius:12px;overflow:hidden;z-index:4;animation:floaty 8s ease-in-out infinite reverse}
.panel-bar,.console-bar{display:flex;align-items:center;gap:9px;padding:11px 13px;border-bottom:1px solid var(--line);font-size:10.5px;font-family:var(--mono);letter-spacing:.04em;color:var(--faint);background:rgba(255,255,255,.02)}
.window-dots{display:inline-flex;gap:5px;margin-right:4px}
.window-dots i{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.16)}
.window-dots i:first-child{background:rgba(255,138,107,.7)}
.window-dots i:nth-child(2){background:rgba(255,205,110,.55)}
.window-dots i:nth-child(3){background:rgba(91,231,255,.6)}
.panel-status{margin-left:auto;display:inline-flex;align-items:center;gap:5px;color:var(--cyan);font-size:9.5px}
.panel-status i,.dot-ok{width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);display:inline-block}
.panel-list{padding:7px}
.panel-item{display:flex;align-items:center;gap:9px;padding:8px 9px;border-radius:7px;font-size:11.5px;color:var(--muted);transition:background .2s ease}
.panel-item + .panel-item{margin-top:2px}
.panel-item.is-active{background:rgba(91,231,255,.09);color:var(--text)}
.panel-ico{width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:5px;font-size:11px;color:var(--cyan);flex:none}
.panel-item small{margin-left:auto;font-size:9.5px;color:var(--faint)}
.panel-foot{display:flex;justify-content:space-between;gap:8px;padding:9px 13px;border-top:1px solid var(--line);font-family:var(--mono);font-size:9.5px;color:var(--faint)}
.command-bar{position:absolute;left:6%;right:6%;bottom:14px;z-index:5;display:flex;align-items:center;gap:10px;padding:13px 16px;border-radius:11px;font-family:var(--mono);font-size:12.5px}
.cmd-prompt{color:var(--cyan);font-weight:700;letter-spacing:.08em}
.cmd-sep{color:var(--faint);margin-left:6px}
.cmd-text{color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cmd-text:empty::after{content:"墙体 G2700"}
.cmd-caret{width:1.5px;height:15px;background:var(--cyan);animation:caret 1s steps(1) infinite;flex:none}
@keyframes caret{50%{opacity:0}}
.cmd-enter{margin-left:auto;padding:3px 9px;border:1px solid rgba(91,231,255,.25);border-radius:5px;color:var(--cyan);font-size:10px;white-space:nowrap}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:28px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(100deg,rgba(255,255,255,.035),rgba(255,255,255,.012));overflow:hidden;position:relative}
.stats::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(91,231,255,.55),rgba(176,124,255,.35),transparent)}
.stat{padding:26px 28px;display:flex;flex-direction:column;gap:3px;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;background:var(--line)}
.stat-num{font-family:var(--mono);font-size:clamp(1.8rem,3vw,2.5rem);font-weight:600;line-height:1.1;letter-spacing:-.04em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-unit{position:absolute;right:28px;top:32px;font-family:var(--mono);font-size:11px;color:var(--faint)}
.stat-label{font-size:12.5px;color:var(--faint);letter-spacing:.02em}

/* ---------- 通用 Section ---------- */
.section{position:relative;padding:clamp(84px,10vw,132px) 0;scroll-margin-top:var(--header-h)}
.section-alt{background:linear-gradient(180deg,rgba(9,15,28,.0),rgba(10,17,32,.62) 22%,rgba(10,17,32,.62) 78%,rgba(9,15,28,0));border-top:1px solid rgba(140,178,238,.055);border-bottom:1px solid rgba(140,178,238,.055)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:56px;margin-bottom:56px}
.section-head h2,.faq-side h2{font-size:clamp(1.85rem,3.1vw,2.75rem);line-height:1.32;letter-spacing:-.025em;font-weight:650;max-width:720px}
.section-desc{max-width:390px;font-size:14.5px;line-height:1.9;color:var(--muted);flex:none}
.section-head-center{justify-content:center;text-align:center}
.section-head-center .kicker{justify-content:center}
.section-head-center .section-desc{margin:18px auto 0;max-width:560px}
.section-head-center h2{margin-inline:auto}

/* ---------- 六大能力卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{position:relative;padding:28px 26px 26px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(160deg,rgba(255,255,255,.036),rgba(255,255,255,.012));overflow:hidden;transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease}
.feature-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.feature-card::after{content:"";position:absolute;width:180px;height:180px;right:-90px;top:-90px;border-radius:50%;background:radial-gradient(circle,rgba(91,231,255,.10),transparent 70%);opacity:0;transition:opacity .3s ease}
.feature-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 20px 50px rgba(0,0,0,.35)}
.feature-card:hover::before{transform:scaleX(1)}
.feature-card:hover::after{opacity:1}
.feature-top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:24px}
.feature-idx{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:var(--faint)}
.feature-ico{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(91,231,255,.22);border-radius:11px;background:rgba(91,231,255,.055);color:var(--cyan)}
.feature-ico svg{width:24px;height:24px}
.feature-card h3{font-size:17px;font-weight:650;letter-spacing:-.01em;margin-bottom:12px}
.feature-card p{font-size:13.5px;line-height:1.85;color:var(--muted);min-height:76px}
.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.card-tags span{font-size:10.5px;font-family:var(--mono);color:var(--faint);padding:4px 8px;border:1px solid var(--line);border-radius:5px;background:rgba(255,255,255,.015)}

/* ---------- 建模演示 ---------- */
.demo-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:center}
.demo-intro{font-size:14px;color:var(--muted);margin-bottom:20px}
.demo-tabs{display:flex;flex-direction:column;gap:9px}
.demo-tab{width:100%;text-align:left;padding:15px 17px;border:1px solid var(--line);border-radius:11px;background:rgba(255,255,255,.018);transition:border-color .22s ease,background .22s ease,transform .22s ease;display:flex;flex-direction:column;gap:3px;position:relative;overflow:hidden}
.demo-tab::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--grad);transform:scaleY(0);transition:transform .25s ease}
.demo-tab:hover{border-color:var(--line-strong);transform:translateX(3px)}
.demo-tab.is-active{border-color:rgba(91,231,255,.4);background:rgba(91,231,255,.065)}
.demo-tab.is-active::before{transform:scaleY(1)}
.demo-tab code{font-size:14px;color:var(--text);letter-spacing:.01em}
.demo-tab.is-active code{color:var(--cyan)}
.demo-tab small{font-size:11.5px;color:var(--faint)}
.demo-note{display:flex;gap:12px;margin-top:22px;padding:15px;border:1px dashed var(--line);border-radius:10px;background:rgba(255,255,255,.012)}
.note-ico{width:18px;height:18px;flex:none;display:flex;align-items:center;justify-content:center;border:1px solid rgba(91,231,255,.4);border-radius:50%;color:var(--cyan);font-family:var(--mono);font-size:11px}
.demo-note p{font-size:12.5px;line-height:1.8;color:var(--faint)}
.demo-console{border-radius:14px;overflow:hidden;min-height:390px;display:flex;flex-direction:column}
.console-bar{font-size:11px;color:var(--muted)}
.console-badge{margin-left:auto;font-family:var(--mono);font-size:9px;letter-spacing:.1em;color:#04121c;background:var(--cyan);padding:2px 7px;border-radius:4px}
.console-body{flex:1;padding:18px 20px;font-family:var(--mono);font-size:12.5px;line-height:1.6}
.console-line{display:flex;gap:16px;min-height:26px;align-items:baseline}
.ln{color:#41506c;font-size:11px;user-select:none;min-width:18px}
.c-dim{color:#5d7397}
.c-key{color:var(--blue)}
.c-op{color:var(--faint)}
.c-str{color:var(--cyan)}
.c-ok{color:#6ee7a8}
.console-segments{margin:14px 0 16px;padding:6px 0 6px 34px;border-left:1px solid rgba(91,231,255,.22);display:flex;flex-direction:column;gap:0}
.seg{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:14px;padding:9px 12px;margin-left:-34px;border-radius:7px;font-size:11.5px;animation:segIn .35s ease both}
.seg:nth-child(odd){background:rgba(255,255,255,.018)}
.seg-name{color:var(--text)}
.seg-range{font-family:var(--mono);color:var(--faint);font-size:10.5px}
.seg-layer{font-family:var(--mono);font-size:10px;color:var(--cyan);padding:2px 7px;border:1px solid rgba(91,231,255,.2);border-radius:4px;background:rgba(91,231,255,.05);white-space:nowrap}
.seg.is-ghost .seg-name,.seg.is-ghost .seg-layer{color:var(--faint);border-color:var(--line)}
@keyframes segIn{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:translateX(0)}}
.console-foot{display:flex;justify-content:space-between;gap:12px;padding:12px 20px;border-top:1px solid var(--line);font-family:var(--mono);font-size:10.5px;color:var(--faint);background:rgba(255,255,255,.015)}
.console-foot span:first-child{display:inline-flex;align-items:center;gap:8px;color:var(--muted)}

/* ---------- 工作流 ---------- */
.flow{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:20px}
.flow-line{position:absolute;left:8%;right:8%;top:27px;height:1px;background:var(--line)}
.flow-line span{display:block;height:100%;width:100%;background:linear-gradient(90deg,rgba(91,231,255,.15),rgba(91,231,255,.7),rgba(176,124,255,.5),rgba(176,124,255,.1))}
.flow-step{position:relative;padding-top:66px}
.flow-num{position:absolute;top:0;left:0;width:54px;height:54px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:14px;background:#0a1220;font-family:var(--mono);font-size:15px;color:var(--cyan);box-shadow:0 0 0 7px var(--bg),0 0 24px rgba(91,231,255,.12)}
.flow-step h3{font-size:16px;font-weight:650;margin-bottom:10px}
.flow-step p{font-size:13.5px;line-height:1.85;color:var(--muted);min-height:76px}
.flow-tag{display:inline-block;margin-top:16px;font-family:var(--mono);font-size:10.5px;color:var(--faint);padding:5px 9px;border:1px solid var(--line);border-radius:5px}

/* ---------- 工具矩阵 ---------- */
.tool-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.tool-group{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(160deg,rgba(255,255,255,.032),rgba(255,255,255,.008));transition:border-color .25s ease,transform .25s ease}
.tool-group:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.tool-group-head{display:flex;align-items:center;gap:11px;padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid var(--line)}
.tool-no{font-family:var(--mono);font-size:10px;color:var(--cyan);letter-spacing:.1em}
.tool-group-head h3{font-size:15px;font-weight:600;letter-spacing:-.01em}
.tool-count{margin-left:auto;font-family:var(--mono);font-size:10.5px;color:var(--faint);border:1px solid var(--line);border-radius:5px;padding:1px 7px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{font-size:12px;color:var(--muted);padding:6px 11px;border:1px solid var(--line);border-radius:7px;background:rgba(255,255,255,.018);transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease}
.chips span:hover{color:var(--cyan);border-color:rgba(91,231,255,.42);background:rgba(91,231,255,.07);transform:translateY(-2px)}

/* ---------- 规格 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.spec-card{padding:26px 22px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.018);position:relative;overflow:hidden;transition:border-color .25s ease}
.spec-card:hover{border-color:var(--line-strong)}
.spec-ico{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid rgba(108,140,255,.3);border-radius:9px;background:rgba(108,140,255,.07);color:var(--blue);font-size:18px;margin-bottom:22px}
.spec-card h3{font-size:15.5px;font-weight:650;margin-bottom:11px}
.spec-card p{font-size:13px;line-height:1.85;color:var(--muted);min-height:96px}
.spec-key{display:inline-block;margin-top:18px;font-family:var(--mono);font-size:10px;color:var(--faint);padding-top:14px;border-top:1px solid var(--line);width:100%}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:64px;align-items:start}
.faq-side{position:sticky;top:calc(var(--header-h) + 48px)}
.faq-side .section-desc{margin-top:20px;max-width:320px}
.faq-side a{color:var(--cyan);border-bottom:1px solid rgba(91,231,255,.35)}
.faq-side a:hover{border-bottom-color:var(--cyan)}
.faq-deco{margin-top:34px;font-family:var(--mono);font-size:150px;line-height:1;background:linear-gradient(160deg,rgba(91,231,255,.16),transparent 70%);-webkit-background-clip:text;background-clip:text;color:transparent;user-select:none}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;display:flex;align-items:center;gap:16px;padding:22px 4px;font-size:15.5px;font-weight:550;cursor:pointer;transition:color .2s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--cyan)}
.faq-plus{position:relative;margin-left:auto;width:18px;height:18px;flex:none}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;left:50%;top:50%;background:var(--cyan);transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease}
.faq-plus::before{width:14px;height:1.4px}
.faq-plus::after{width:1.4px;height:14px}
.faq-item[open] .faq-plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-item[open] summary{color:var(--cyan)}
.faq-answer{padding:0 44px 24px 4px;font-size:13.5px;line-height:1.95;color:var(--muted);animation:faqIn .28s ease}
.faq-answer code{font-size:12px;padding:2px 6px;border-radius:4px;background:rgba(91,231,255,.08);color:var(--cyan)}
@keyframes faqIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;padding:clamp(90px,11vw,150px) 0;text-align:center;overflow:hidden;border-top:1px solid var(--line);background:radial-gradient(ellipse 60% 100% at 50% 100%,rgba(70,110,220,.16),transparent 70%)}
.cta-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(120,180,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,180,255,.05) 1px,transparent 1px);background-size:52px 52px;-webkit-mask-image:radial-gradient(ellipse 65% 75% at 50% 60%,#000,transparent 80%);mask-image:radial-gradient(ellipse 65% 75% at 50% 60%,#000,transparent 80%)}
.cta-inner{position:relative;display:flex;flex-direction:column;align-items:center}
.cta-inner .kicker{justify-content:center}
.cta-inner h2{font-size:clamp(2.1rem,4.4vw,3.6rem);line-height:1.3;letter-spacing:-.03em;font-weight:700;margin-bottom:22px}
.cta-inner > p{color:var(--muted);font-size:15.5px;margin-bottom:36px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.cta-foot{margin-top:30px!important;font-size:12px!important;color:var(--faint)!important;font-family:var(--mono)}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(4,7,14,.7);padding-top:56px}
.footer-inner{display:flex;justify-content:space-between;gap:56px;padding-bottom:48px}
.footer-brand p{margin-top:20px;font-size:12.5px;line-height:2;color:var(--faint)}
.footer-links{display:flex;gap:clamp(40px,7vw,96px)}
.footer-links > div{display:flex;flex-direction:column;gap:11px}
.footer-links h4{font-size:12px;font-weight:600;color:var(--text);margin-bottom:6px;letter-spacing:.06em}
.footer-links a{font-size:12.5px;color:var(--faint);transition:color .2s ease}
.footer-links a:hover{color:var(--cyan)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0 26px;border-top:1px solid var(--line);font-size:11.5px;color:#54637f}

/* ---------- 回顶 ---------- */
.back-top{position:fixed;right:26px;bottom:26px;z-index:90;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:11px;background:rgba(10,18,32,.82);backdrop-filter:blur(10px);color:var(--cyan);opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .25s ease,transform .25s ease,border-color .25s ease}
.back-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.back-top:hover{border-color:var(--cyan);transform:translateY(-3px)}
.back-top svg{width:16px;height:16px}

/* ---------- 占位链接提示 ---------- */
.link-toast{
  position:fixed;left:50%;bottom:32px;z-index:300;
  transform:translate(-50%,14px);opacity:0;pointer-events:none;
  padding:11px 18px;border:1px solid var(--line-strong);border-radius:9px;
  background:rgba(10,18,32,.95);backdrop-filter:blur(12px);
  box-shadow:0 14px 40px rgba(0,0,0,.5);
  font-family:var(--mono);font-size:11.5px;color:var(--muted);white-space:nowrap;
  transition:opacity .25s ease,transform .25s ease;
}
.link-toast.is-visible{opacity:1;transform:translate(-50%,0)}

/* ---------- 进场动画 ----------
   可见性只由 class 决定（opacity），位移动画即便被环境跳过也不会隐藏内容 */
.js .reveal{opacity:0}
.js .reveal.is-visible{opacity:1;animation:revealUp .72s cubic-bezier(.2,.7,.25,1) both}
@keyframes revealUp{from{transform:translateY(24px)}to{transform:none}}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .nav{gap:20px}
  .nav a{font-size:12.5px}
  .hero-panel{right:-6px;width:236px}
  .tag-a{left:-6px}
  .tag-b{right:-4px}
  .section-head{gap:32px}
}
@media (max-width:1024px){
  .nav-doc{display:none}
  .hero-inner{grid-template-columns:1fr;gap:12px}
  .hero-copy{max-width:680px}
  .hero-visual{min-height:520px;max-width:620px;margin-inline:auto;width:100%}
  .hero-panel{right:0;bottom:80px}
  .feature-grid,.tool-groups{grid-template-columns:repeat(2,1fr)}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .spec-card p{min-height:0}
  .flow{grid-template-columns:repeat(2,1fr);row-gap:44px}
  .flow-line{display:none}
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .faq-side{position:static}
  .faq-deco{display:none}
}
@media (max-width:820px){
  .nav{
    position:absolute;top:var(--header-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:10px 24px 20px;margin:0;
    background:rgba(6,11,21,.97);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 50px rgba(0,0,0,.5);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  }
  .nav.is-open{opacity:1;visibility:visible;transform:none}
  .nav a{padding:13px 4px;font-size:14px;border-bottom:1px solid rgba(140,178,238,.07)}
  .nav a::after{display:none}
  .nav-toggle{display:flex}
  .header-actions{margin-left:auto}
  .demo-layout{grid-template-columns:1fr;gap:28px}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:40px}
  .section-desc{max-width:620px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3)::before,.stat:nth-child(1)::before{display:none}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line)}
  .footer-inner{flex-direction:column;gap:36px}
}
@media (max-width:620px){
  :root{--header-h:64px}
  .wrap{width:min(calc(100% - 32px),var(--wrap))}
  .header-inner{gap:10px}
  .header-actions{gap:6px}
  .header-actions .btn-primary{padding:8px 11px;font-size:12px}
  .brand-mark{width:32px;height:32px}
  .brand-text strong{font-size:14px}
  .brand-text em{font-size:9px;letter-spacing:.10em}
  .btn-lg{padding:13px 20px;font-size:14px}
  .hero{padding-top:40px}
  .hero h1{font-size:clamp(2.15rem,9vw,2.8rem)}
  .hero-lede{font-size:14.5px}
  .hero-actions{width:100%}
  .hero-actions .btn{flex:1;min-width:150px}
  .hero-visual{min-height:410px}
  .hero-panel{width:196px;right:-4px;bottom:66px}
  .panel-item{font-size:10.5px;padding:6px}
  .panel-item small{display:none}
  .panel-foot{font-size:8px;padding:8px}
  .panel-bar{font-size:9px;padding:9px;white-space:nowrap}
  .panel-bar > span:nth-child(2){overflow:hidden;text-overflow:ellipsis;min-width:0}
  .panel-status{flex:none}
  .command-bar{left:0;right:0;bottom:0;padding:11px 12px;font-size:11px}
  .float-tag{padding:6px 9px}
  .float-tag .tag-k{font-size:8px}
  .float-tag strong{font-size:10px}
  .tag-a{top:14%;left:-4px}
  .tag-b{top:6%;right:-4px}
  .feature-grid,.tool-groups,.spec-grid{grid-template-columns:1fr}
  .feature-card p,.flow-step p{min-height:0}
  .flow{grid-template-columns:1fr;row-gap:34px}
  .flow-step{padding-top:0;padding-left:68px;min-height:54px}
  .flow-num{width:46px;height:46px;font-size:13px}
  .flow-tag{margin-top:10px}
  .stat{padding:20px}
  .stat-unit{right:20px;top:26px}
  .stat-num{font-size:1.9rem}
  .console-body{padding:14px;font-size:11px}
  .console-segments{padding-left:20px}
  .seg{margin-left:-20px;grid-template-columns:1fr auto;gap:8px;font-size:10.5px}
  .seg-range{display:none}
  .faq-item summary{font-size:14px;padding:18px 2px}
  .faq-answer{padding-right:12px;font-size:13px}
  .footer-links{gap:28px;flex-wrap:wrap}
  .footer-bottom{font-size:10.5px}
  .back-top{right:14px;bottom:14px}
}

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