/* ===== 桩卫士 · 数字哨兵 —— 守护者主题官网 ===== */
:root{
  --void:#04100a; --void2:#07160e; --panel:#0a1e14;
  --ink:#eaf7ef; --muted:#9dc7b0; --dim:#5f8f77;
  --guard:#12E78A; --guard2:#0B9A5E; --edge:#63F2B4; --spark:#FDBA07;
  --brand:#005432; --gold:#FDBA07;
  --line:rgba(90,200,150,.16); --line2:rgba(18,231,138,.34);
  --grad:linear-gradient(120deg,var(--guard2),var(--guard));
  --grad-gold:linear-gradient(120deg,#FDBA07,#FFD24D);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-disp:"Chakra Petch",var(--font-cn);
  --mono:"Chakra Petch",ui-monospace,"SFMono-Regular","JetBrains Mono",Consolas,monospace;
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn); color:var(--ink); line-height:1.7;
  background:
    radial-gradient(1200px 700px at 80% -8%,rgba(18,231,138,.10),transparent 60%),
    radial-gradient(900px 600px at 8% 12%,rgba(99,242,180,.08),transparent 55%),
    linear-gradient(180deg,var(--void),var(--void2) 40%,var(--void));
  overflow-x:hidden; -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.mono{font-family:var(--mono);font-feature-settings:"tnum"}
.container{max-width:var(--maxw);margin:0 auto;padding:80px 24px}
.wrap{position:relative;z-index:2}

/* --- 背景层：粒子/网格/扫描线/颗粒 --- */
.field{position:fixed;inset:0;z-index:0;pointer-events:none}
.grid-veil{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000,transparent 78%);
          mask-image:radial-gradient(circle at 50% 30%,#000,transparent 78%);}
.scanline{position:fixed;left:0;right:0;top:0;height:2px;z-index:1;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--guard),var(--edge),transparent);
  filter:blur(1px);opacity:.5;animation:scan 9s linear infinite}
@keyframes scan{0%{transform:translateY(-2vh)}100%{transform:translateY(102vh)}}
.grain{position:fixed;inset:-50%;z-index:3;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 8s steps(6) infinite}
@keyframes grain{0%{transform:translate(0,0)}20%{transform:translate(-4%,3%)}40%{transform:translate(3%,-4%)}60%{transform:translate(-3%,2%)}80%{transform:translate(4%,-2%)}100%{transform:translate(0,0)}}

/* --- 载入 --- */
#loader{position:fixed;inset:0;z-index:100;display:grid;place-content:center;gap:22px;justify-items:center;
  background:radial-gradient(circle at 50% 40%,#07160e,#04100a);transition:opacity .6s ease,visibility .6s}
#loader.gone{opacity:0;visibility:hidden}
.ld-svg{width:96px;height:106px;fill:none;stroke:var(--guard);stroke-width:3;filter:drop-shadow(0 0 12px rgba(18,231,138,.6))}
.ld-draw{stroke-dasharray:320;stroke-dashoffset:320;animation:draw 1.3s .1s ease forwards}
.ld-bolt{fill:var(--spark);stroke:none;opacity:0;transform-origin:center;animation:pop .5s 1.1s ease forwards, flicker 2s 1.3s infinite}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pop{0%{opacity:0;transform:scale(.4)}100%{opacity:1;transform:scale(1)}}
@keyframes flicker{0%,100%{opacity:1}48%{opacity:1}50%{opacity:.35}52%{opacity:1}}
.ld-text{font-family:var(--mono);letter-spacing:.35em;color:var(--edge);font-size:13px}
.ld-bar{width:180px;height:2px;background:var(--line2);overflow:hidden;border-radius:2px}
.ld-bar i{display:block;height:100%;width:0;background:var(--grad);animation:loadbar 1.6s ease forwards}
@keyframes loadbar{to{width:100%}}

/* --- 导航 --- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:14px clamp(20px,5vw,56px);transition:.35s;border-bottom:1px solid transparent}
.nav.solid{background:rgba(4,14,9,.78);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-disp);font-weight:700;font-size:20px;letter-spacing:.02em}
.brand-mark{width:34px;height:34px;object-fit:contain;filter:drop-shadow(0 0 8px rgba(18,231,138,.45))}
.bm-bolt{fill:var(--spark);stroke:none}
.brand-txt em{font-style:normal;color:var(--guard)}
.nav-links{display:flex;gap:30px;font-size:14.5px;color:var(--muted)}
.nav-links a{position:relative;padding:4px 0;transition:color .3s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--grad);transition:width .3s}
.nav-links a:hover{color:var(--ink)}.nav-links a:hover::after{width:100%}
.cta-mini{font-family:var(--font-disp);font-weight:600;font-size:14px;padding:9px 18px;border-radius:2px;color:#04120c;
  background:var(--grad);box-shadow:0 0 18px rgba(18,231,138,.35);transition:.3s}
.cta-mini:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(18,231,138,.5)}
@media(max-width:820px){.nav-links{display:none}}

/* --- 英雄区 --- */
.hero{position:relative;max-width:var(--maxw);margin:0 auto;padding:128px 24px 56px;min-height:92vh;display:flex;align-items:center}
.spotlight{position:absolute;width:520px;height:520px;left:0;top:0;pointer-events:none;z-index:-1;opacity:.6;transition:transform .2s;
  background:radial-gradient(circle,rgba(99,242,180,.16),transparent 62%);transform:translate(-50%,-50%);filter:blur(10px)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;width:100%}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;text-align:center}.emblem{order:-1}}
.kicker{font-family:var(--mono);letter-spacing:.4em;font-size:12.5px;color:var(--guard);margin-bottom:22px;
  display:inline-block;padding:6px 14px;border:1px solid var(--line2);border-radius:2px;background:rgba(18,231,138,.06)}
.hero-title{font-family:var(--font-disp);line-height:1.08;margin-bottom:8px}
.ht-1{display:block;font-size:clamp(46px,8.4vw,104px);font-weight:600;letter-spacing:.05em;
  background:linear-gradient(180deg,#fff,#8FF6C6);-webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 30px rgba(18,231,138,.16)}
.ht-2{display:block;font-size:clamp(15px,2vw,21px);font-weight:500;color:var(--edge);margin-top:14px;letter-spacing:.14em}
.tag{font-size:clamp(16px,2vw,20px);color:var(--muted);margin:14px 0}
.punch{font-size:15px;color:var(--muted);max-width:540px;margin:18px 0 26px;letter-spacing:.01em}
@media(max-width:900px){.punch{margin-left:auto;margin-right:auto}}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
@media(max-width:900px){.hero-btns{justify-content:center}}
.btn{position:relative;display:inline-flex;align-items:center;gap:9px;font-family:var(--font-disp);font-weight:600;font-size:15px;
  padding:12px 26px;border-radius:3px;transition:transform .25s,box-shadow .25s;overflow:hidden;cursor:pointer;border:1px solid transparent;letter-spacing:.02em}
.btn-primary{color:#04120c;background:var(--grad);box-shadow:0 10px 34px rgba(18,231,138,.34)}
.btn-primary::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.5) 50%,transparent 70%);
  transform:translateX(-120%);transition:transform .6s}
.btn-primary:hover::before{transform:translateX(120%)}
.btn-primary:hover{box-shadow:0 14px 44px rgba(18,231,138,.55)}
.btn-arrow{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2}
.btn-ghost{color:var(--ink);border:1px solid var(--line2);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--guard);color:var(--guard);box-shadow:0 0 24px rgba(18,231,138,.2)}
.hud{list-style:none;display:flex;gap:24px;margin-top:34px;flex-wrap:wrap;padding-top:22px;border-top:1px solid var(--line)}
@media(max-width:900px){.hud{justify-content:center}}
.hud li{display:flex;flex-direction:column}
.hud b{font-size:21px;color:var(--ink);font-weight:600}
.hud span{font-size:11.5px;color:var(--dim);letter-spacing:.1em;margin-top:3px}

/* --- 盾牌徽章 --- */
.emblem{position:relative;display:grid;place-items:center;perspective:1000px}
.em-glow{position:absolute;width:80%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(18,231,138,.28),transparent 65%);filter:blur(30px);animation:breathe 4s ease-in-out infinite}
@keyframes breathe{0%,100%{transform:scale(1);opacity:.7}50%{transform:scale(1.12);opacity:1}}
.shield{position:relative;width:min(420px,86%);aspect-ratio:320/352;display:grid;place-items:center;filter:drop-shadow(0 20px 50px rgba(0,0,0,.5))}
.shield-fx{position:absolute;inset:0;width:100%;height:100%}
.emblem-logo{position:relative;z-index:2;width:60%;object-fit:contain;filter:drop-shadow(0 0 26px rgba(18,231,138,.45));animation:floaty 6s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(-6px)}50%{transform:translateY(6px)}}
.emblem-tilt{transition:transform .2s ease-out}
.ring{fill:none;stroke:var(--line2);stroke-width:1}
.r1{stroke-dasharray:4 8;opacity:.55;animation:spin 40s linear infinite}
.r2{stroke-dasharray:2 10;opacity:.4;animation:spin 26s linear infinite reverse}
.r3{opacity:.3}
@keyframes spin{to{transform:rotate(360deg)}}
.shield,.ring,.sweep{transform-box:fill-box}
.r1,.r2{transform-origin:160px 176px}
.sweep{transform-origin:160px 176px;animation:spin 5.5s linear infinite}
/* 真实 Logo 取代旧手绘盾牌/桩/闪电 */
.nodes circle{fill:var(--guard);filter:drop-shadow(0 0 6px var(--guard));transform-box:fill-box;transform-origin:center;animation:node 3s ease-in-out infinite}
.nodes circle:nth-child(2){animation-delay:.4s}.nodes circle:nth-child(3){animation-delay:.8s}
.nodes circle:nth-child(4){animation-delay:1.2s}.nodes circle:nth-child(5){animation-delay:1.6s}.nodes circle:nth-child(6){animation-delay:2s}
@keyframes node{0%,100%{opacity:.35;transform:scale(.7)}50%{opacity:1;transform:scale(1.4)}}
.em-status{position:absolute;bottom:2%;font-family:var(--mono);font-size:12.5px;letter-spacing:.25em;color:var(--guard);
  display:flex;align-items:center;gap:8px;background:rgba(6,12,20,.7);padding:7px 16px;border:1px solid var(--line2);border-radius:2px}
.em-status .dot{width:8px;height:8px;border-radius:50%;background:var(--guard);box-shadow:0 0 10px var(--guard);animation:blink 1.4s infinite}
@keyframes blink{50%{opacity:.2}}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);font-size:12px;letter-spacing:.25em;color:var(--dim);
  display:flex;align-items:center;gap:10px}
.scroll-hint i{width:22px;height:36px;border:1px solid var(--line2);border-radius:12px;position:relative}
.scroll-hint i::after{content:"";position:absolute;left:50%;top:7px;width:3px;height:7px;border-radius:2px;background:var(--guard);transform:translateX(-50%);animation:wheel 1.6s infinite}
@keyframes wheel{0%{opacity:0;transform:translate(-50%,0)}40%{opacity:1}100%{opacity:0;transform:translate(-50%,12px)}}

/* --- 通用区块标题 --- */
.sec-head{max-width:720px;margin:0 auto 52px;text-align:center}
.sec-label{font-family:var(--mono);letter-spacing:.4em;font-size:12px;color:var(--edge);margin-bottom:14px}
.sec-title{font-family:var(--font-disp);font-size:clamp(25px,4vw,40px);font-weight:600;letter-spacing:.06em;
  background:linear-gradient(120deg,#fff,var(--guard));-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-sub{color:var(--muted);margin-top:12px;font-size:14px;letter-spacing:.02em}

/* --- 守护数据 --- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:820px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat-card{position:relative;padding:28px 24px;border:1px solid var(--line);border-radius:6px;overflow:hidden;
  background:linear-gradient(180deg,rgba(10,32,20,.7),rgba(8,24,16,.5));transition:.35s}
.stat-card::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--grad);transition:width .5s}
.stat-card:hover{border-color:var(--line2);transform:translateY(-6px);box-shadow:0 22px 50px rgba(0,0,0,.4)}
.stat-card:hover::after{width:100%}
.sc-corner{position:absolute;right:14px;top:14px;width:26px;height:28px;fill:none;stroke:var(--line2);stroke-width:1.4;opacity:.7;transition:.35s}
.stat-card:hover .sc-corner{stroke:var(--guard);filter:drop-shadow(0 0 6px var(--guard))}
.num{font-size:clamp(30px,4.4vw,46px);font-weight:600;color:#fff;line-height:1;letter-spacing:.02em}
.unit{color:var(--muted);margin-top:10px;font-size:13px;letter-spacing:.08em}

/* --- 四大守护能力 --- */
.loops{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
@media(max-width:820px){.loops{grid-template-columns:1fr}}
.loop-card{position:relative;padding:28px 26px;border:1px solid var(--line);border-radius:8px;overflow:hidden;
  background:linear-gradient(160deg,rgba(10,30,18,.8),rgba(6,18,12,.6));transition:.4s}
.loop-card::before{content:"";position:absolute;inset:0;border-radius:8px;padding:1px;background:var(--grad);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity .4s}
.loop-card:hover::before{opacity:1}
.loop-card:hover{transform:translateY(-6px);box-shadow:0 24px 60px rgba(0,0,0,.45)}
.lc-no{position:absolute;right:22px;top:18px;font-size:34px;color:rgba(90,200,150,.12);font-weight:700}
.loop-icon{width:56px;height:56px;margin-bottom:20px}
.loop-icon svg{width:100%;height:100%;fill:rgba(18,231,138,.1);stroke:var(--guard);stroke-width:2;transition:.4s}
.li-mark{fill:none;stroke:var(--edge);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.loop-card:hover .loop-icon svg{filter:drop-shadow(0 0 12px rgba(18,231,138,.5));transform:rotate(-4deg) scale(1.05)}
.loop-card h3{font-family:var(--font-disp);font-size:18px;font-weight:600;margin-bottom:10px;letter-spacing:.02em}
.loop-card p{color:var(--muted);font-size:13.8px;line-height:1.65}

/* --- 六重响应协议 --- */
.flow{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-top:20px}
@media(max-width:960px){.flow{grid-template-columns:repeat(2,1fr)}.flow-line{display:none}}
.flow-line{position:absolute;top:30px;left:6%;right:6%;height:2px;overflow:hidden}
.flow-line::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--guard),var(--edge),var(--spark));
  transform:scaleX(0);transform-origin:left;transition:transform 1.6s ease .2s}
.flow.on .flow-line::before{transform:scaleX(1)}
.flow-step{text-align:center;position:relative}
.node{width:60px;height:66px;margin:0 auto 16px;position:relative;display:grid;place-items:center}
.node svg{position:absolute;inset:0;width:100%;height:100%;fill:rgba(6,20,12,.8);stroke:var(--guard);stroke-width:1.6;transition:.4s}
.node b{position:relative;z-index:2;font-size:20px;color:var(--ink);font-weight:700}
.flow-step:hover .node svg{filter:drop-shadow(0 0 12px var(--guard));stroke:var(--edge)}
.flow-step h4{font-family:var(--font-disp);font-size:14.5px;font-weight:600;margin-bottom:7px;letter-spacing:.02em}
.flow-step p{font-size:12px;color:var(--dim);line-height:1.55}

/* --- 透明军令 --- */
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.trust-grid{grid-template-columns:1fr}}
.trust-card{position:relative;padding:34px 24px;border:1px solid var(--line);border-radius:8px;text-align:center;
  background:linear-gradient(180deg,rgba(10,30,18,.7),rgba(6,18,12,.5));transition:.35s;
  clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px)}
.trust-card:hover{transform:translateY(-6px);border-color:var(--line2);box-shadow:0 20px 50px rgba(0,0,0,.4)}
.tc-ico{display:inline-grid;place-items:center;width:52px;height:52px;margin-bottom:16px;font-size:22px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,231,138,.18),transparent 70%);border:1px solid var(--line2)}
.trust-card h4{font-family:var(--font-disp);font-size:18px;font-weight:600;margin-bottom:10px;letter-spacing:.03em}
.trust-card p{color:var(--muted);font-size:13.8px;line-height:1.6}
.trust-note{margin-top:28px;text-align:center;color:var(--dim);font-size:12.5px;letter-spacing:.06em}

/* --- 为何选择 --- */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media(max-width:820px){.features{grid-template-columns:repeat(2,1fr)}}
.feature{text-align:center;padding:30px 18px;border:1px solid var(--line);border-radius:8px;transition:.35s;
  background:rgba(8,26,16,.5)}
.feature svg{width:46px;height:50px;fill:rgba(18,231,138,.08);stroke:var(--guard);stroke-width:1.6;margin-bottom:16px;transition:.4s}
.feature:hover{transform:translateY(-6px);border-color:var(--line2);box-shadow:0 18px 44px rgba(0,0,0,.4)}
.feature:hover svg{filter:drop-shadow(0 0 12px var(--guard));transform:scale(1.08)}
.feature h5{font-family:var(--font-disp);font-size:17px;font-weight:600;margin-bottom:8px;letter-spacing:.02em}
.feature p{color:var(--muted);font-size:13px;line-height:1.7}

/* --- 召唤 CTA --- */
.cta{position:relative;text-align:center;padding:110px 24px;overflow:hidden;
  background:radial-gradient(700px 360px at 50% 0,rgba(18,231,138,.12),transparent 70%)}
.cta-shield{position:absolute;left:50%;top:50%;width:520px;height:560px;transform:translate(-50%,-50%);opacity:.06;pointer-events:none}
.cta-shield svg{width:100%;height:100%;fill:none;stroke:var(--guard);stroke-width:1.5;animation:breathe 5s ease-in-out infinite}
.cta .container{padding-top:0;padding-bottom:0;position:relative;z-index:2}
.cta h2{font-family:var(--font-disp);font-size:clamp(24px,4vw,40px);font-weight:600;margin:14px 0 10px;letter-spacing:.04em;
  background:linear-gradient(120deg,#fff,var(--edge));-webkit-background-clip:text;background-clip:text;color:transparent}
.cta p{color:var(--muted);max-width:560px;margin:0 auto}

/* --- 页脚 --- */
footer{text-align:center;padding:46px 24px 60px;color:var(--dim);font-size:13.5px;border-top:1px solid var(--line)}
footer p:first-child{color:var(--guard);font-size:13px;margin-bottom:14px}

/* --- 揭示动效 --- */
.mask,.mask2,.reveal{will-change:transform,opacity}
.mask{clip-path:inset(0 0 100% 0);transition:clip-path .9s cubic-bezier(.19,1,.22,1)}
.mask.in{clip-path:inset(0 0 0 0)}
.mask2{clip-path:inset(0 0 100% 0);transition:clip-path 1s cubic-bezier(.19,1,.22,1) .15s}
.mask2.in{clip-path:inset(0 0 0 0)}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s cubic-bezier(.19,1,.22,1)}
.reveal.in{opacity:1;transform:none}
.tilt{transition:transform .2s ease-out,box-shadow .3s,border-color .3s}
/* 英雄区初始不隐藏，由 JS 加 .in */
.hero .mask,.hero .mask2{opacity:1}

/* --- 降低动效偏好 --- */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .mask,.mask2,.reveal{opacity:1!important;transform:none!important;clip-path:none!important}
  .scanline,.grain,.sweep{display:none}
}