/* ============================================================
   菌树 FungTree 宣传站 · 菇小二同款设计系统
   主色 #20A53A · 亮白底 · 橙强调 · 保留孢子/光晕动效
   ============================================================ */

.fungtree-download{
  --p:var(--gx-primary);
  --p-dark:var(--gx-primary-dark);
  --p-light:var(--gx-primary-light);
  --p-bg-faint:var(--gx-primary-bg-faint);
  --p-bg-light:var(--gx-primary-bg-light);
  --p-border:var(--gx-border);
  --t:var(--gx-warning);
  --t-light:var(--gx-warning-bg);
  --bg:var(--gx-bg-page);
  --bg-moss:var(--gx-bg-moss);
  --card:var(--gx-bg-card);
  --text:var(--gx-text-primary);
  --text-2:var(--gx-text-secondary);
  --text-3:var(--gx-text-muted);
  --border:var(--gx-border);
  --border-light:var(--gx-border-light);
  --shadow:var(--gx-shadow-md);
  --shadow-lg:var(--gx-shadow-lg);
  --shadow-card:var(--gx-shadow-card);
  --shadow-card-hover:var(--gx-shadow-card-hover);
  --radius:var(--gx-radius-card);
  --radius-lg:var(--gx-radius-lg);
  --radius-xl:var(--gx-radius-xl);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  font-family:var(--gx-font-family);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.container{width:min(1180px,92%);margin:0 auto}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  background:var(--gx-bg-card);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--p-border);
  transition:box-shadow .3s;
}
.nav.scrolled{box-shadow:var(--shadow-card)}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--text)}
.brand-icon{
  width:38px;height:38px;border-radius:12px;
  background:var(--gx-bg-card);display:grid;place-items:center;
  box-shadow:0 4px 10px rgba(32,165,58,.18);
  overflow:hidden;
}
.brand-icon img{width:100%;height:100%;object-fit:cover}
.brand small{display:block;font-size:.62rem;font-weight:500;letter-spacing:.18em;color:var(--text-3);text-transform:uppercase}
.nav-links{display:flex;gap:6px;font-size:.9rem;color:var(--text-2);font-weight:500}
.nav-links a{padding:8px 14px;border-radius:6px;transition:all .2s}
.nav-links a:hover{color:var(--gx-link);background:var(--p-bg-faint)}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;border-radius:999px;
  background:var(--p);color:#fff;font-size:.85rem;font-weight:700;
  box-shadow:0 6px 18px rgba(32,165,58,.25);
  transition:transform .2s,background .2s,box-shadow .2s;
}
.nav-cta:hover{background:var(--p-dark);transform:translateY(-1px);box-shadow:0 8px 22px rgba(32,165,58,.35)}
.menu-btn{display:none;background:var(--p-bg-faint);border:none;color:var(--gx-link);border-radius:8px;padding:8px 10px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:92vh;display:flex;align-items:center;
  padding:120px 0 90px;
  background:var(--gx-bg-card-warm);
  overflow:hidden;
}
.blob{
  position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;pointer-events:none;
}
.blob-1{width:480px;height:480px;background:rgba(32,165,58,.18);top:-140px;right:-80px;animation:drift 14s ease-in-out infinite}
.blob-2{width:360px;height:360px;background:rgba(77,191,98,.16);bottom:-120px;left:-80px;opacity:.4;animation:drift 18s ease-in-out infinite reverse}
.blob-3{width:300px;height:300px;background:rgba(255,136,0,.12);top:45%;right:18%;animation:drift 22s ease-in-out infinite}
@keyframes drift{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-40px) scale(1.08)}}

.spores{position:absolute;inset:0;pointer-events:none;z-index:1}
.spore{
  position:absolute;border-radius:50%;background:rgba(32,165,58,.18);
  animation:rise linear infinite;
}
@keyframes rise{
  0%{transform:translateY(110vh) translateX(0) scale(.8);opacity:0}
  10%{opacity:.6}
  90%{opacity:.6}
  100%{transform:translateY(-10vh) translateX(30px) scale(1.2);opacity:0}
}

.hero .container{position:relative;z-index:3}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--gx-bg-card);border:1px solid var(--p-border);
  font-size:.82rem;color:var(--gx-link);font-weight:700;margin-bottom:24px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--p);animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.85)}}
.hero h1{
  font-size:clamp(2.4rem,5.6vw,4.2rem);font-weight:900;line-height:1.1;
  color:var(--text);margin-bottom:22px;
}
.hero h1 .accent{
  color:var(--gx-link);position:relative;display:inline-block;
}
.hero h1 .accent::after{
  content:'';position:absolute;bottom:4px;left:-4px;right:-4px;height:12px;
  background:rgba(32,165,58,.15);border-radius:4px;z-index:-1;
}
.hero h1 small{
  display:block;font-size:.32em;font-weight:500;color:var(--text-2);letter-spacing:.02em;margin-top:14px;
}
.hero .lead{color:var(--text-2);font-size:clamp(1rem,1.6vw,1.15rem);max-width:540px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  cursor:pointer;border:none;transition:all .2s;font-family:inherit;min-height:var(--gx-control-height);border-radius:var(--gx-radius-button);font-size:var(--gx-text-base);font-weight:var(--gx-font-medium);padding:10px 20px;
}
.btn:hover{
  transform:none}
.btn svg{width:20px;height:20px}
.btn-accent{background:var(--gx-primary);color:var(--gx-text-on-primary);box-shadow:none;
}
.btn-accent:hover{
  box-shadow:none;
  background:var(--gx-primary-dark)}
.btn-ghost{color:var(--text);border:1px solid var(--p-border);background:var(--gx-bg-card);
}
.btn-ghost:hover{background:var(--p-bg-faint);border-color:var(--p)}
.btn-spore{background:var(--gx-bg-card);color:var(--gx-text-primary);border:1px solid var(--gx-border);box-shadow:none;
}

/* Hero art */
.hero-art{position:relative;height:440px;display:flex;align-items:center;justify-content:center}
.hero-art svg{width:100%;height:100%;overflow:visible}
.tree-line{stroke:var(--p);stroke-width:1.8;fill:none;opacity:0;stroke-dasharray:300;stroke-dashoffset:300;animation:draw 1.6s ease forwards}
.tree-line.l2{animation-delay:.3s}
.tree-line.l3{animation-delay:.6s}
.tree-line.l4{animation-delay:.9s}
.tree-node{fill:var(--p);opacity:0;animation:appear .5s ease forwards}
@keyframes draw{to{stroke-dashoffset:0;opacity:.55}}
@keyframes appear{to{opacity:1}}
.hero-logo{
  width:100%;max-width:280px;filter:drop-shadow(0 20px 40px rgba(32,165,58,.18));
  animation:gentleFloat 6s ease-in-out infinite;border-radius:var(--radius-xl);
}
.hero-logo img{width:100%;height:auto;border-radius:var(--radius-xl)}
@keyframes gentleFloat{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-12px) rotate(1deg)}}
.hero-ring{
  position:absolute;border:1.5px dashed var(--p-border);border-radius:50%;
  animation:spinSlow 30s linear infinite;
}
.hero-ring--lg{width:460px;height:460px}
.hero-ring--md{width:360px;height:360px;animation-direction:reverse}
@keyframes spinSlow{100%{transform:rotate(360deg)}}
.floating-card{
  position:absolute;background:var(--card);backdrop-filter:blur(10px);
  border:1px solid var(--p-border);border-radius:14px;padding:12px 16px;
  box-shadow:var(--shadow-card);font-size:.82rem;animation:floatY 5s ease-in-out infinite;
}
.floating-card .k{color:var(--text-3);font-size:.72rem;display:block}
.floating-card .v{color:var(--gx-link);font-weight:700;font-family:"JetBrains Mono",monospace}
.fc-1{top:8%;left:-4%;animation-delay:0s}
.fc-2{bottom:14%;right:-2%;animation-delay:1.5s}
.fc-3{bottom:46%;left:6%;animation-delay:3s}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* ---------- 统计条 ---------- */
.stats-strip{
  position:relative;z-index:5;margin-top:-50px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.stat{
  background:var(--card);border:1px solid var(--p-border);border-radius:var(--radius);
  padding:26px 22px;text-align:center;box-shadow:var(--shadow-card);
}
.stat .num{
  font-size:2rem;font-weight:900;color:var(--text);line-height:1.1;
}
.stat .num small{font-size:.55em;color:var(--gx-link);margin-left:2px}
.stat .lbl{font-size:.84rem;color:var(--text-2);margin-top:6px}

/* ---------- 通用区块 ---------- */
.section{padding:90px 0;position:relative}
.section-head{max-width:680px;margin:0 auto 55px;text-align:center}
.section-title{font-size:clamp(1.8rem,3.8vw,2.6rem);font-weight:900;margin:12px 0;color:var(--text)}
.section-title .accent{color:var(--gx-link)}
.section-sub{color:var(--text-2);font-size:1.05rem}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.72rem;font-weight:700;
  text-transform:uppercase;letter-spacing:1.5px;color:var(--gx-link);
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--p);border-radius:2px}

/* ---------- 核心优势 ---------- */
.pillars{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pillar{
  position:relative;background:var(--card);border:1px solid var(--p-border);border-radius:var(--radius-lg);
  padding:30px 28px;overflow:hidden;transition:all .25s;
}
.pillar:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover);border-color:transparent}
.pillar-tag{position:absolute;top:22px;right:24px;font-family:"JetBrains Mono",monospace;font-size:.72rem;color:var(--text-3);letter-spacing:.1em}
.pillar-icon{
  width:54px;height:54px;border-radius:16px;display:grid;place-items:center;
  margin-bottom:18px;position:relative;z-index:1;
}
.pillar:nth-child(1) .pillar-icon{background:var(--p-bg-faint);color:var(--gx-link)}
.pillar:nth-child(2) .pillar-icon{background:rgba(21,101,192,.08);color:var(--gx-info,#1565C0)}
.pillar:nth-child(3) .pillar-icon{background:var(--t-bg-faint,rgba(255,136,0,.10));color:var(--t)}
.pillar:nth-child(4) .pillar-icon{background:rgba(52,199,89,.10);color:var(--p-light)}
.pillar h3{font-size:1.25rem;font-weight:800;margin-bottom:10px;color:var(--text)}
.pillar p{color:var(--text-2);font-size:.95rem;margin-bottom:14px}
.pillar .tech{display:flex;flex-wrap:wrap;gap:8px}
.pillar .tech span{font-family:"JetBrains Mono",monospace;font-size:.74rem;padding:4px 10px;border-radius:6px;background:var(--p-bg-faint);color:var(--gx-link);border:1px solid var(--p-border)}

/* ---------- 工作流 ---------- */
.workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:step}
.step{
  position:relative;background:var(--card);border:1px solid var(--p-border);border-radius:var(--radius);
  padding:24px 18px;transition:all .25s;
}
.step:hover{transform:translateY(-4px);border-color:var(--p)}
.step-num{font-size:2.2rem;font-weight:900;color:rgba(32,165,58,.18);line-height:1;margin-bottom:12px;counter-increment:step}
.step-num::before{content:counter(step,decimal-leading-zero)}
.step h4{font-size:1.05rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.step p{font-size:.87rem;color:var(--text-2);line-height:1.6}
.step-arrow{position:absolute;right:-10px;top:50%;transform:translateY(-50%);color:var(--p-border);z-index:2}
.step:last-child .step-arrow{display:none}

/* ---------- 桌面端展示 ---------- */
.showcase-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.showcase-shot{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--p-border);box-shadow:var(--shadow-lg)}
.showcase-shot img{width:100%;display:block}
.showcase-shot::after{content:"";position:absolute;inset:0;border-radius:var(--radius-lg);box-shadow:inset 0 0 0 1px rgba(255,255,255,.5);pointer-events:none}
.feature-list{list-style:none;display:flex;flex-direction:column;gap:16px;margin-top:24px}
.feature-list li{display:flex;gap:14px;align-items:flex-start}
.feature-list .fi{flex-shrink:0;width:30px;height:30px;border-radius:8px;background:var(--p-bg-faint);border:1px solid var(--p-border);display:grid;place-items:center;color:var(--gx-link);font-size:.8rem}
.feature-list .ft{font-weight:700;color:var(--text);font-size:.98rem}
.feature-list .fd{color:var(--text-2);font-size:.9rem;margin-top:2px}
.engine-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.engine-chips .chip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:10px;background:var(--card);border:1px solid var(--p-border);font-family:"JetBrains Mono",monospace;font-size:.82rem;color:var(--text)}
.engine-chips .chip i{width:7px;height:7px;border-radius:50%;background:var(--p)}
.engine-chips .chip.gold i{background:var(--t)}
.engine-chips .chip.blue i{background:#3B82F6}

/* ---------- 下载区 ---------- */
.download-section{
  background:var(--bg);
}
.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.platform{
  position:relative;background:var(--card);border:1px solid var(--p-border);border-radius:var(--radius-lg);
  padding:32px;display:flex;flex-direction:column;gap:18px;transition:all .25s;
}
.platform:hover{border-color:var(--p-border);box-shadow:var(--shadow-card-hover)}
.platform-head{display:flex;align-items:center;gap:16px}
.platform-ic{width:62px;height:62px;border-radius:18px;display:grid;place-items:center;flex-shrink:0}
.platform-ic.android{background:var(--p-bg-faint);box-shadow:0 8px 24px rgba(32,165,58,.15)}
.platform-ic.windows{background:rgba(45,212,206,.12);box-shadow:0 8px 24px rgba(45,212,206,.15)}
.platform-ic img{width:42px;height:42px;object-fit:contain;border-radius:10px}
.platform-ic svg{width:32px;height:32px}
.platform-head h3{font-size:1.28rem;font-weight:800}
.platform-head span{font-size:.84rem;color:var(--text-3);font-family:"JetBrains Mono",monospace}
.platform-meta{display:flex;flex-wrap:wrap;gap:8px}
.platform-meta span{font-size:.8rem;color:var(--text-2);padding:5px 12px;border-radius:999px;background:var(--p-bg-faint);border:1px solid var(--p-border)}
.platform-desc{color:var(--text-2);font-size:.94rem}
.qr-box{display:flex;align-items:center;gap:16px;padding:14px;background:var(--bg);border:1px dashed var(--p-border);border-radius:12px}
.qr-box canvas,.qr-box img{width:88px;height:88px;border-radius:8px;background:var(--gx-bg-card);padding:4px;flex-shrink:0}
.qr-box .qt{font-size:.84rem;color:var(--text-2)}
.qr-box .qt strong{color:var(--text);display:block;margin-bottom:2px}
.hash-row{display:flex;align-items:center;gap:10px;font-size:.76rem;color:var(--text-2);background:var(--bg);padding:10px 12px;border-radius:10px;border:1px solid var(--border-light);word-break:break-all}
.hash-row code{font-family:"JetBrains Mono",monospace;color:var(--p-dark)}
.hash-row button{background:none;border:none;color:var(--gx-link);cursor:pointer;font-size:.76rem;white-space:nowrap;font-family:inherit}
.platform-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.platform-actions .btn{width:100%;padding:14px 22px}

/* ---------- 安装指南 ---------- */
.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.guide-card{background:var(--card);border:1px solid var(--p-border);border-radius:var(--radius-lg);padding:28px}
.guide-card h3{font-size:1.18rem;font-weight:800;margin-bottom:18px;display:flex;align-items:center;gap:10px;color:var(--text)}
.guide-card h3 .gi{width:32px;height:32px;border-radius:9px;background:var(--p-bg-faint);border:1px solid var(--p-border);display:grid;place-items:center;color:var(--gx-link)}
.guide-card ol{list-style:none;counter-reset:gi;display:flex;flex-direction:column;gap:14px}
.guide-card li{counter-increment:gi;position:relative;padding-left:42px;color:var(--text-2);font-size:.93rem}
.guide-card li::before{content:counter(gi);position:absolute;left:0;top:-2px;width:28px;height:28px;border-radius:8px;background:var(--p-bg-faint);border:1px solid var(--p-border);color:var(--gx-link);font-family:"JetBrains Mono",monospace;font-size:.8rem;font-weight:700;display:grid;place-items:center}
.guide-card strong{color:var(--text)}
.guide-card code{font-family:"JetBrains Mono",monospace;font-size:.85em;color:var(--t);background:rgba(255,136,0,.08);padding:1px 6px;border-radius:4px}

/* ---------- 页脚 ---------- */
.footer{background:#152619;color:rgba(255,255,255,.65);padding:60px 0 36px}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-icon{width:44px;height:44px;background:var(--gx-bg-card)}
.footer p{color:rgba(255,255,255,.6);font-size:.9rem;max-width:360px}
.footer h5{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--p-light);margin-bottom:16px;font-weight:700}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer ul a{color:rgba(255,255,255,.6);font-size:.9rem;transition:color .2s}
.footer ul a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;color:rgba(255,255,255,.45);font-size:.84rem}

/* ---------- 滚动渐显 ---------- */
.reveal{opacity:1;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{transform:none}

/* ---------- Toast ---------- */
.toast{
  position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(140%);
  background:#1a1a1a;border:1px solid var(--border-light);color:#fff;padding:12px 24px;border-radius:999px;
  font-size:.9rem;box-shadow:var(--shadow-lg);z-index:200;transition:transform .35s;
}
.toast.show{transform:translateX(-50%) translateY(0)}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero-art{display:none}
  .showcase-grid{grid-template-columns:1fr;gap:30px}
  .workflow{grid-template-columns:repeat(2,1fr)}
  .step-arrow{display:none}
  .footer-top{grid-template-columns:1fr;gap:28px}
}
@media(max-width:760px){
  .nav-links{display:none}
  .menu-btn{display:block}
  .nav .container{height:64px}
  .hero{padding:110px 0 70px}
  .stats-strip{grid-template-columns:repeat(2,1fr);margin-top:-36px}
  .pillars{grid-template-columns:1fr}
  .workflow{grid-template-columns:1fr}
  .download-grid,.guide-grid{grid-template-columns:1fr}
  .section{padding:70px 0}
}


.fungtree-download a:focus-visible, .fungtree-download button:focus-visible { outline:2px solid var(--gx-link); outline-offset:3px; }
@media (prefers-reduced-motion:reduce) { .fungtree-download *, .fungtree-download *::before, .fungtree-download *::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important; } }