/* ─── COSV5 V3 — Main Stylesheet ─── */
/* Palette: Dark space with purple-blue-cyan-amber */

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

:root{
  --bg:#0a0a0f;
  --bg2:#0f172a;
  --bg3:#111827;
  --card:#111827;
  --card-hover:#1e293b;
  --accent:#7c3aed;
  --accent2:#2563eb;
  --accent3:#06b6d4;
  --gold:#f59e0b;
  --text:#f1f5f9;
  --text2:#94a3b8;
  --text3:#64748b;
  --radius:14px;
  --radius-sm:10px;
  --font:'Inter','Noto Sans SC',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono',monospace;
  --ease:cubic-bezier(.4,0,.2,1);
  --max-w:1120px;
  --accent-gradient:linear-gradient(135deg,var(--accent),var(--accent2));
  --nav-h:60px
}

html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}
body{background:var(--bg);color:var(--text);font:300 16px/1.6 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--accent);color:#fff}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* ─── Utilities ─── */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:var(--radius-sm);font-size:.88rem;font-weight:500;transition:all .3s var(--ease);cursor:pointer;border:none;position:relative;overflow:hidden}
.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:0 0 30px rgba(124,58,237,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 40px rgba(37,99,235,.25)}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--text);border:1px solid rgba(255,255,255,.08)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(124,58,237,.3);transform:translateY(-2px)}
.btn-arrow{display:inline-block;transition:transform .3s var(--ease)}
.btn:hover .btn-arrow{transform:translateX(4px)}

.section-label{display:inline-flex;align-items:center;gap:6px;font:500 .68rem/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.section-label::before{content:'';width:20px;height:1.5px;background:var(--accent);border-radius:2px}
.section-title{font-size:clamp(1.4rem,3vw,2rem);font-weight:600;letter-spacing:-.02em;line-height:1.2;margin-bottom:8px}
.section-desc{color:var(--text2);font-size:.92rem;max-width:600px;line-height:1.6}

.tag{display:inline-block;padding:2px 10px;border-radius:20px;font:500 .65rem/1.3 var(--font-mono);letter-spacing:.02em;vertical-align:middle}
.tag-hot{background:rgba(245,158,11,.15);color:var(--gold);border:1px solid rgba(245,158,11,.25)}
.tag-rec{background:rgba(124,58,237,.15);color:var(--accent);border:1px solid rgba(124,58,237,.25)}
.tag-new{background:rgba(6,182,212,.12);color:var(--accent3);border:1px solid rgba(6,182,212,.2)}

/* ─── Scrollbar ─── */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:linear-gradient(180deg,var(--bg),var(--bg2))}
::-webkit-scrollbar-thumb{background:var(--accent-gradient);border-radius:4px;border:2px solid transparent;background-clip:content-box;transition:all .3s}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,var(--accent2),var(--accent));border-width:1px}
::-webkit-scrollbar-thumb:active{background:var(--accent2)}
html{scrollbar-width:thin;scrollbar-color:var(--accent) var(--bg)}

/* ─── Scroll Progress ─── */
.scroll-progress{position:fixed;top:0;left:0;height:3px;z-index:999;background:linear-gradient(90deg,var(--accent),var(--accent2),var(--accent3));transform-origin:left;transform:scaleX(0);will-change:transform;pointer-events:none;box-shadow:0 0 12px rgba(124,58,237,.35),0 0 24px rgba(37,99,235,.12)}

/* ─── Nav ─── */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,10,15,.75);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid rgba(255,255,255,.04);transition:background .35s var(--ease),box-shadow .35s var(--ease);height:var(--nav-h)}
nav.scrolled{background:rgba(10,10,15,.92);box-shadow:0 1px 30px rgba(0,0,0,.5)}
.nav-inner{display:flex;align-items:center;height:var(--nav-h);max-width:var(--max-w);margin:0 auto;padding:0 24px;gap:12px}
.nav-logo{font:700 1.15rem var(--font);background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;flex-shrink:0;letter-spacing:-.02em;margin-right:auto}
.nav-links{display:flex;gap:2px;flex:1;overflow-x:auto;scrollbar-width:none;justify-content:center}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{position:relative;white-space:nowrap;padding:7px 14px;border-radius:10px;font-size:.82rem;font-weight:450;color:var(--text2);transition:all .25s var(--ease)}
.nav-links a::before{content:'';position:absolute;inset:0;border-radius:10px;background:var(--accent-gradient);opacity:0;transition:opacity .3s var(--ease);z-index:-1}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-links a.active{color:#fff}
.nav-links a.active::before{opacity:1}
.nav-links .nav-cta{padding:7px 18px;background:var(--accent-gradient);color:#fff!important;font-weight:550;border-radius:10px;margin-left:6px;flex-shrink:0}
.nav-links .nav-cta::before{display:none}
.nav-links .nav-cta:hover{opacity:.9;transform:translateY(-1px)}
.nav-right{display:flex;align-items:center;gap:6px;flex-shrink:0;margin-left:auto}
.lang-btn{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);color:var(--text2);padding:5px 10px;border-radius:8px;font:.7rem var(--font-mono);cursor:pointer;transition:all .25s var(--ease)}
.lang-btn:hover{border-color:var(--accent);color:var(--text);background:rgba(124,58,237,.08)}

/* ─── Hamburger ─── */
.hamburger{display:none;flex-direction:column;justify-content:center;align-items:center;width:36px;height:36px;border-radius:8px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);cursor:pointer;transition:all .25s var(--ease);position:relative}
.hamburger:hover{border-color:var(--accent);background:rgba(124,58,237,.06)}
.hamburger span{display:block;width:18px;height:1.5px;background:var(--text2);border-radius:2px;transition:all .3s var(--ease);position:absolute}
.hamburger span:nth-child(1){transform:translateY(-5px)}
.hamburger span:nth-child(2){transform:translateY(5px)}
.hamburger.open span:nth-child(1){transform:rotate(45deg)}
.hamburger.open span:nth-child(2){transform:rotate(-45deg)}

/* ─── Hero ─── */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;padding:80px 24px 40px}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-glow{position:absolute;width:700px;height:700px;border-radius:50%;filter:blur(140px);pointer-events:none;opacity:.1;will-change:transform}
.hero-glow.g1{background:var(--accent);top:-25%;left:-15%}
.hero-glow.g2{background:var(--accent2);bottom:-15%;right:-15%}
.hero-grid{position:absolute;inset:0;pointer-events:none;opacity:.03;background-image:radial-gradient(circle,var(--accent) 1px,transparent 1px);background-size:48px 48px}
.hero-content{position:relative;z-index:2;max-width:780px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;font:.75rem var(--font-mono);color:var(--accent);background:rgba(124,58,237,.08);border:1px solid rgba(124,58,237,.15);padding:4px 14px;border-radius:20px;margin-bottom:28px}
.hero-badge-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 2s ease-in-out infinite;flex-shrink:0}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{font-size:clamp(2.8rem,8vw,5.5rem);font-weight:700;letter-spacing:-.04em;line-height:1.05;margin-bottom:12px;display:flex;flex-direction:column;align-items:center;gap:2px}
.hero h1 .outline{-webkit-text-stroke:1.5px var(--text);-webkit-text-fill-color:transparent;display:block}
.hero h1 .gradient{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:block}
.hero-beam{display:block;width:120px;height:3px;background:var(--accent-gradient);border-radius:2px;margin:6px auto;position:relative;overflow:hidden}
.hero-beam::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);animation:beamSweep 2.5s ease-in-out infinite}
@keyframes beamSweep{0%{transform:translateX(-100%)}50%{transform:translateX(100%)}100%{transform:translateX(200%)}}
.hero-sub{font-size:clamp(1rem,1.6vw,1.2rem);color:var(--text2);max-width:560px;margin:16px auto 36px;line-height:1.6}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;justify-content:center;margin-top:52px;flex-wrap:wrap}
.hero-stat{text-align:center;position:relative}
.hero-stat:not(:last-child)::after{content:'';position:absolute;right:-20px;top:50%;transform:translateY(-50%);width:1px;height:24px;background:rgba(255,255,255,.06)}
.hero-stat-num{font:700 1.6rem var(--font-mono);background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-stat-label{font-size:.75rem;color:var(--text3);margin-top:2px}

/* Hero scroll indicator */
.hero-scroll{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:6px;opacity:.3;animation:scrollFade 2s ease-in-out infinite;z-index:2}
.hero-scroll span{display:block;width:1px;height:32px;background:linear-gradient(180deg,var(--text2),transparent)}
@keyframes scrollFade{0%,100%{opacity:.2;transform:translateX(-50%) translateY(0)}50%{opacity:.5;transform:translateX(-50%) translateY(4px)}}

/* ─── Canvas Particle ─── */
#particleCanvas{position:absolute;inset:0;z-index:1;pointer-events:none}

/* ─── Sections ─── */
section{padding:80px 0;scroll-margin-top:var(--nav-h)}
section:nth-child(even){background:var(--bg2)}
#hero{padding:80px 24px 40px;background:var(--bg)}
#timeline{padding:60px 0}
#mission{padding:0}
#team{padding:60px 0}
#password{padding:60px 0}
.section-header{margin-bottom:40px}
@media(min-width:768px){
  .section-header{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}
  .section-header .section-desc{margin:0}
}

/* ─── About ─── */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.about-text p{color:var(--text2);line-height:1.7;margin-bottom:16px}
.about-text p:last-child{margin-bottom:0}
.about-timeline-dot{margin-bottom:16px;display:flex;align-items:center;gap:12px}
.about-timeline-dot::before{content:'';width:10px;height:10px;border-radius:50%;background:var(--accent-gradient);flex-shrink:0;animation:pulse 2s ease-in-out infinite}
.about-date{font:600 .8rem var(--font-mono);color:var(--accent);letter-spacing:.05em}
.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat-card{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius);padding:20px;text-align:center;transition:all .3s var(--ease)}
.stat-card:hover{border-color:rgba(124,58,237,.15);transform:translateY(-2px)}
.stat-card-num{font:700 2rem var(--font-mono);background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-card-label{font-size:.78rem;color:var(--text3);margin-top:4px}

/* ─── Timeline ─── */
.timeline{position:relative}
.timeline::before{content:'';position:absolute;left:16px;top:0;bottom:0;width:1.5px;background:linear-gradient(180deg,var(--accent),var(--accent2),transparent)}
.timeline-item{position:relative;padding-left:48px;padding-bottom:36px}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{position:absolute;left:8px;top:4px;width:18px;height:18px;border-radius:50%;border:2px solid var(--accent);background:var(--bg);display:flex;align-items:center;justify-content:center}
.timeline-dot::after{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent)}
.timeline-item.highlight .timeline-dot{border-color:var(--accent3)}
.timeline-item.highlight .timeline-dot::after{background:var(--accent3);animation:pulse 2s ease-in-out infinite}
.timeline-year{font:600 .75rem var(--font-mono);color:var(--accent);margin-bottom:2px}
.timeline-month{font-size:.72rem;color:var(--text3)}
.timeline-icon{font-size:1rem;margin-right:4px}
.timeline-title{font-weight:600;font-size:1rem;margin-bottom:4px}
.timeline-desc{font-size:.85rem;color:var(--text2);line-height:1.5;max-width:550px}

/* ─── Resources Preview ─── */
.resources-preview .resource-list{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.resource-item{display:flex;align-items:center;gap:14px;padding:14px 18px;background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius-sm);transition:all .25s var(--ease);cursor:default;position:relative;border-left:3px solid transparent}
.resource-item:nth-child(1){border-left-color:var(--accent)}
.resource-item:nth-child(2){border-left-color:var(--accent2)}
.resource-item:nth-child(3){border-left-color:var(--accent3)}
.resource-item:nth-child(4){border-left-color:var(--gold)}
.resource-item:nth-child(5){border-left-color:rgba(124,58,237,.5)}
.resource-item:hover{background:var(--card-hover);border-color:rgba(124,58,237,.15);border-left-color:var(--accent);transform:translateX(4px)}
.resource-num{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(124,58,237,.1);color:var(--accent);font:600 .72rem var(--font-mono);flex-shrink:0;transition:all .3s}
.resource-item:hover .resource-num{background:rgba(37,99,235,.12);color:var(--accent2);transform:scale(1.12)}
.resource-link{flex:1;color:var(--text);font-size:.88rem;line-height:1.4;min-width:0}
.resource-link:hover{color:var(--accent3)}
.resource-meta{display:flex;gap:8px;align-items:center;flex-shrink:0}
.resource-meta span{font-size:.7rem;color:var(--text3);white-space:nowrap}
.resource-date{font-size:.7rem;color:var(--text3);flex-shrink:0}
.resource-more{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;font-size:.82rem;color:var(--text2);border-top:1px solid rgba(255,255,255,.04);margin-top:4px}

/* ─── Channels ─── */
.channel-network{position:relative;padding:40px 0}
.channel-hub{text-align:center;margin-bottom:32px;position:relative}
.channel-hub-inner{display:inline-flex;align-items:center;justify-content:center;width:120px;height:120px;border-radius:50%;background:var(--card);border:2px solid rgba(124,58,237,.2);position:relative;box-shadow:0 0 40px rgba(124,58,237,.08)}
.channel-hub-inner::before{content:'';position:absolute;inset:-6px;border-radius:50%;border:1px solid rgba(124,58,237,.1);animation:pulse 3s ease-in-out infinite}
.channel-hub-text{text-align:center}
.channel-hub-text h3{font-size:1.1rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.channel-hub-text p{font-size:.72rem;color:var(--text3);margin-top:2px}
.channel-nodes{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:28px}
.channel-node{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius-sm);padding:16px;text-align:center;transition:all .3s var(--ease);display:block;position:relative}
.channel-node:hover{border-color:rgba(124,58,237,.2);transform:translateY(-2px)}
.channel-node h4{font-size:.88rem;font-weight:600}
.channel-node p{font-size:.72rem;color:var(--text2);margin-top:2px}
.channel-node .ch-sub{font-size:.65rem;color:var(--text3);margin-top:4px}
.channel-tags{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;padding:20px 0 0;border-top:1px solid rgba(255,255,255,.04)}
.channel-tag{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:20px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.04);font-size:.75rem;color:var(--text2);transition:all .2s}
.channel-tag:hover{background:rgba(124,58,237,.08);border-color:rgba(124,58,237,.15);color:var(--accent);transform:translateY(-1px)}
.channel-tag .tag-dot{width:6px;height:6px;border-radius:50%;display:inline-block;flex-shrink:0}
@media(max-width:768px){
  .channel-nodes{grid-template-columns:repeat(2,1fr)}
  .channel-hub-inner{width:90px;height:90px}
}

/* ─── Features ─── */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:768px){.features-grid{grid-template-columns:1fr}}
.feature-card{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:calc(var(--radius) + 2px);padding:28px 24px;transition:all .35s var(--ease);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;inset:0;border-radius:inherit;background:linear-gradient(135deg,var(--accent),var(--accent2));opacity:0;transition:opacity .35s var(--ease);z-index:0}
.feature-card:hover{transform:translateY(-4px);border-color:transparent}
.feature-card:hover::before{opacity:.08}
.feature-card>*{position:relative;z-index:1}
.feature-card .feature-icon{margin-bottom:14px}
.feature-card h4{font-weight:600;font-size:1rem;margin-bottom:6px}
.feature-card p{font-size:.82rem;color:var(--text2);line-height:1.5}

/* ─── CSS Icon System ─── */
.icon-wrap{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:rgba(124,58,237,.08);flex-shrink:0;position:relative}
.icon-wrap.lg{width:44px;height:44px;border-radius:12px}
.icon-wrap.sm{width:26px;height:26px;border-radius:7px}
.icon-shape{position:relative;display:flex;align-items:center;justify-content:center;width:20px;height:20px}
.icon-wrap.lg .icon-shape{width:22px;height:22px}
.icon-wrap.sm .icon-shape{width:14px;height:14px}

/* ico-stream - concentric circles + ripple (日更精选) */
.ico-stream .i-c{width:9px;height:9px;border-radius:50%;background:var(--accent);position:relative}
.ico-stream .i-c::before{content:'';position:absolute;top:-5px;left:-5px;width:19px;height:19px;border-radius:50%;border:1.5px solid var(--accent);opacity:.5;animation:rippleOut 3s ease-out infinite}
.ico-stream .i-c::after{content:'';position:absolute;top:-12px;left:-12px;width:33px;height:33px;border-radius:50%;border:1px solid var(--accent2);opacity:.25;animation:rippleOut 3s ease-out 1s infinite}
@keyframes rippleOut{0%{transform:scale(.95);opacity:.5}50%{transform:scale(1.15);opacity:.15}100%{transform:scale(.95);opacity:.5}}

/* ico-access - two overlapping circles + heartbeat (共享会员) */
.ico-access{position:relative}
.ico-access .i-a{width:10px;height:10px;border-radius:50%;border:2px solid var(--accent);position:absolute}
.ico-access .i-a:nth-child(1){left:0;top:4px;animation:heartLeft 2.5s ease-in-out infinite}
.ico-access .i-a:nth-child(2){right:0;top:4px;animation:heartRight 2.5s ease-in-out infinite}
.ico-access .i-b{width:5px;height:5px;border-radius:50%;background:var(--accent2);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:2;animation:pulse 2.5s ease-in-out infinite}
@keyframes heartLeft{0%,100%{transform:translateY(0)}50%{transform:translateY(-2px) translateX(1px)}}
@keyframes heartRight{0%,100%{transform:translateY(0)}50%{transform:translateY(-2px) translateX(-1px)}}

/* ico-shield - shield + glow pulse (邮箱保障) */
.ico-shield .i-sh{width:15px;height:17px;background:linear-gradient(180deg,var(--accent),var(--accent2));clip-path:polygon(50% 0,100% 15%,100% 55%,50% 100%,0 55%,0 15%);border-radius:2px;animation:shieldGlow 3s ease-in-out infinite}
.ico-shield .i-sh::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:4px;height:5px;border-radius:1px;background:var(--bg)}
@keyframes shieldGlow{0%,100%{filter:brightness(1)}50%{filter:brightness(1.4)}}

/* ico-star - four-point star + twinkle (许愿卡) */
.ico-star .i-s{width:10px;height:10px;background:var(--accent2);position:relative;border-radius:1px;animation:twinkle 3s ease-in-out infinite}
.ico-star .i-s::before{content:'';position:absolute;top:-4px;left:-4px;width:18px;height:18px;background:var(--accent2);border-radius:50%;opacity:.15;animation:twinkleHalo 3s ease-in-out infinite}
.ico-star .i-s::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:6px;height:6px;background:var(--accent);clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);opacity:.4}
@keyframes twinkle{0%,100%{transform:rotate(45deg) scale(1)}50%{transform:rotate(60deg) scale(1.15)}}
@keyframes twinkleHalo{0%,100%{transform:scale(1);opacity:.15}50%{transform:scale(1.2);opacity:.3}}

/* ico-group - three dots in triangle + bounce (拼团回血) */
.ico-group{position:relative;width:18px;height:18px}
.ico-group .i-g{width:5px;height:5px;border-radius:50%;background:var(--accent);position:absolute}
.ico-group .i-g:nth-child(1){top:2px;left:50%;transform:translateX(-50%);background:var(--accent2);animation:dotBounce1 2s ease-in-out infinite}
.ico-group .i-g:nth-child(2){bottom:2px;left:2px;animation:dotBounce2 2s ease-in-out infinite}
.ico-group .i-g:nth-child(3){bottom:2px;right:2px;animation:dotBounce3 2s ease-in-out infinite}
@keyframes dotBounce1{0%,100%{transform:translateX(-50%) translateY(0)}30%{transform:translateX(-50%) translateY(-4px)}60%{transform:translateX(-50%) translateY(0)}}
@keyframes dotBounce2{0%,100%{transform:translateY(0)}20%{transform:translateY(0)}50%{transform:translateY(-4px)}80%{transform:translateY(0)}}
@keyframes dotBounce3{0%,100%{transform:translateY(0)}40%{transform:translateY(0)}70%{transform:translateY(-4px)}90%{transform:translateY(0)}}

/* ico-cleaner - square with scan lines (ExifCleaner) */
.ico-cleaner .i-c{width:14px;height:14px;border:2px solid var(--accent);border-radius:2px;position:relative}
.ico-cleaner .i-c::before{content:'';position:absolute;left:2px;right:2px;height:2px;background:var(--accent2);border-radius:1px;opacity:.6;top:2px;animation:scanLine 3s var(--ease) infinite}
.ico-cleaner .i-c::after{content:'';position:absolute;left:2px;right:2px;height:1px;background:var(--accent3);opacity:.4;top:7px;animation:scanLine 3s var(--ease) 1.5s infinite}
@keyframes scanLine{0%,100%{top:2px}50%{top:9px}}

/* ico-search - magnifying glass + rock (PaPulse) */
.ico-search .i-s{width:10px;height:10px;border-radius:50%;border:2px solid var(--accent);position:absolute;left:1px;top:2px;animation:searchRock 3s var(--ease) infinite;transform-origin:6px 11px}
.ico-search .i-s::after{content:'';position:absolute;bottom:-4px;right:-5px;width:2px;height:10px;background:var(--accent2);border-radius:1px;transform:rotate(45deg)}
@keyframes searchRock{0%,100%{transform:rotate(-3deg)}50%{transform:rotate(8deg)}}

/* ico-sync - rotating arrows (V5Mesh) */
.ico-sync .i-y{width:14px;height:14px;border:2px solid transparent;border-top-color:var(--accent);border-right-color:var(--accent2);border-radius:50%;position:relative;animation:spin 2s linear infinite}
.ico-sync .i-y::before{content:'';position:absolute;top:-3px;right:-3px;width:6px;height:6px;border-top:2px solid var(--accent2);border-right:2px solid var(--accent2);transform:rotate(45deg)}
@keyframes spin{to{transform:rotate(360deg)}}

/* ico-coin - circle + pulse (GuiYaoBot) */
.ico-coin .i-o{width:15px;height:15px;border-radius:50%;border:2px solid var(--accent);position:relative;animation:coinPulse 2.5s ease-in-out infinite}
.ico-coin .i-o::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:6px;height:6px;border-radius:50%;border:1.5px solid var(--accent2);animation:coinInner 2.5s ease-in-out infinite}
@keyframes coinPulse{0%,100%{transform:scale(1);border-color:var(--accent)}50%{transform:scale(1.12);border-color:var(--accent2)}}
@keyframes coinInner{0%,100%{opacity:.6}50%{opacity:1}}

/* ico-camera - shutter + flash (资源照片) */
.ico-camera .i-cm{width:14px;height:11px;border:2px solid var(--accent);border-radius:3px;position:relative}
.ico-camera .i-cm::before{content:'';position:absolute;top:-4px;left:50%;transform:translateX(-50%);width:5px;height:4px;border:2px solid var(--accent);border-bottom:none;border-radius:2px 2px 0 0}
.ico-camera .i-cm::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:5px;height:5px;border-radius:50%;background:var(--accent);opacity:.4;animation:cameraFlash 3s ease-in-out infinite}
@keyframes cameraFlash{0%,100%{opacity:.4}50%{opacity:.8;box-shadow:0 0 6px var(--accent2)}}

/* ico-video - play button + pulse (资源视频) */
.ico-video .i-v{position:relative;width:0;height:0;border-top:7px solid transparent;border-bottom:7px solid transparent;border-left:12px solid var(--accent2);animation:videoPulse 3s ease-in-out infinite}
@keyframes videoPulse{0%,100%{opacity:.7}50%{opacity:1;filter:drop-shadow(0 0 4px var(--accent2))}}

/* ico-package - box + lid (资源大小) */
.ico-package .i-p{width:14px;height:11px;border:2px solid var(--accent);border-radius:2px;position:relative}
.ico-package .i-p::before{content:'';position:absolute;top:-4px;left:-2px;right:-2px;height:4px;border:2px solid var(--accent);border-radius:2px 2px 0 0;background:var(--bg)}
.ico-package .i-p::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:2px;height:5px;background:var(--accent2);border-radius:1px;opacity:.5}

/* ico-rocket - rocket + exhaust (CTA按钮) */
.ico-rocket .i-r{width:12px;height:16px;background:linear-gradient(135deg,var(--accent),var(--accent2));clip-path:polygon(50% 0,100% 60%,80% 100%,20% 100%,0 60%);position:relative;animation:rocketFloat 2s ease-in-out infinite}
.ico-rocket .i-r::after{content:'';position:absolute;bottom:-3px;left:50%;transform:translateX(-50%);width:4px;height:4px;background:linear-gradient(180deg,var(--accent3),transparent);border-radius:50%;animation:exhaust 1s ease-out infinite}

/* White variant for dark-button contexts */
.ico-rocket-white .i-r{width:12px;height:16px;background:#fff;clip-path:polygon(50% 0,100% 60%,80% 100%,20% 100%,0 60%);position:relative;animation:rocketFloat 2s ease-in-out infinite}
.ico-rocket-white .i-r::after{content:'';position:absolute;bottom:-3px;left:50%;transform:translateX(-50%);width:4px;height:4px;background:linear-gradient(180deg,rgba(255,255,255,.6),transparent);border-radius:50%;animation:exhaust 1s ease-out infinite}
@keyframes rocketFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}
@keyframes exhaust{0%{opacity:1;transform:translateX(-50%) scale(1)}100%{opacity:0;transform:translateX(-50%) scale(2.5) translateY(6px)}}

/* ico-chat - speech bubble + dots (聊天) */
.ico-chat .i-ch{width:14px;height:11px;border:2px solid var(--accent);border-radius:4px;position:relative}
.ico-chat .i-ch::before{content:'';position:absolute;bottom:-5px;left:3px;border-top:5px solid var(--accent);border-left:4px solid transparent;border-right:4px solid transparent}
.ico-chat .i-ch::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:4px;height:4px;border-radius:50%;background:var(--accent2);box-shadow:-5px 0 0 var(--accent2),5px 0 0 var(--accent2);opacity:.6;animation:chatPulse 2s ease-in-out infinite}
@keyframes chatPulse{0%,100%{opacity:.5}50%{opacity:.9}}

/* ico-person - head + shoulders (用户) */
.ico-person .i-p{width:14px;height:14px;position:relative}
.ico-person .i-p::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.8}
.ico-person .i-p::after{content:'';position:absolute;bottom:0;left:0;right:0;height:6px;border-radius:3px 3px 0 0;background:var(--accent2);opacity:.5}

/* ico-fire - flame + flicker (热销) */
.ico-fire .i-f{width:10px;height:14px;background:linear-gradient(180deg,#f59e0b,#f97316);border-radius:0 0 4px 4px;clip-path:polygon(50% 0,100% 50%,85% 100%,15% 100%,0 50%);position:relative;animation:fireFlicker 1.5s ease-in-out infinite;transform-origin:center bottom}
.ico-fire .i-f::after{content:'';position:absolute;top:3px;left:50%;transform:translateX(-50%);width:3px;height:5px;background:rgba(255,255,255,.6);border-radius:50%;animation:fireCore 1.5s ease-in-out infinite}
@keyframes fireFlicker{0%,100%{transform:scaleY(1)}25%{transform:scaleY(1.08) scaleX(.95)}50%{transform:scaleY(.92)}75%{transform:scaleY(1.05) scaleX(.97)}}
@keyframes fireCore{0%,100%{opacity:.6}50%{opacity:1}}

/* ico-hamster - simple critter (彩蛋) */
.ico-hamster .i-h{width:14px;height:13px;border-radius:50% 50% 40% 40%;background:var(--accent);position:relative;animation:hamsterBounce 2s ease-in-out infinite}
.ico-hamster .i-h::before{content:'';position:absolute;top:-3px;left:-2px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.ico-hamster .i-h::after{content:'';position:absolute;top:-3px;right:-2px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
@keyframes hamsterBounce{0%,100%{transform:translateY(0)}30%{transform:translateY(-3px)}60%{transform:translateY(0)}85%{transform:translateY(-1px)}}

/* ico-calendar - calendar with date (日期) */
.ico-calendar .i-ca{width:13px;height:12px;border:2px solid var(--accent);border-radius:2px;position:relative}
.ico-calendar .i-ca::before{content:'';position:absolute;top:-3px;left:2px;width:2px;height:4px;background:var(--accent);border-radius:1px;box-shadow:5px 0 0 var(--accent)}
.ico-calendar .i-ca::after{content:'';position:absolute;top:3px;left:2px;right:2px;height:1.5px;background:var(--accent2);opacity:.4}


/* ─── Mission ─── */
#mission{position:relative;overflow:hidden;min-height:60vh;display:flex;align-items:center}
.mission-content{max-width:800px;margin:0 auto;text-align:center;padding:40px 0;position:relative}
.mission-quote{font:600 clamp(1.5rem,3.5vw,2.2rem) var(--font);letter-spacing:-.02em;line-height:1.4;border:none;padding:0;margin:0 0 20px 0;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.mission-desc{color:var(--text2);font-size:.95rem;line-height:1.8;max-width:600px;margin:0 auto}
.mission-keywords{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:0}
.mission-keywords span{position:absolute;font:500 .75rem var(--font-mono);color:var(--accent);opacity:0;letter-spacing:.1em;animation:kwFade 12s ease-in-out infinite}
.mission-keywords span:nth-child(1){left:10%;top:20%;animation-delay:0s}
.mission-keywords span:nth-child(2){right:12%;top:35%;animation-delay:2s}
.mission-keywords span:nth-child(3){left:8%;bottom:30%;animation-delay:4s;color:var(--accent2)}
.mission-keywords span:nth-child(4){right:10%;bottom:25%;animation-delay:6s;color:var(--accent3)}
.mission-keywords span:nth-child(5){left:50%;top:15%;animation-delay:8s;color:var(--accent2)}
@keyframes kwFade{0%,100%{opacity:0;transform:translateY(10px)}15%,35%{opacity:.08;transform:translateY(0)}50%{opacity:0;transform:translateY(-10px)}}

/* ─── Tools ─── */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}
.tool-card{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius);padding:20px;transition:all .3s var(--ease)}
.tool-card:hover{border-color:rgba(6,182,212,.15);transform:translateY(-2px)}
.tool-card .tool-head{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.tool-card .tool-icon{font-size:1.3rem}
.tool-card h4{font-weight:600;font-size:.92rem}
.tool-card p{font-size:.82rem;color:var(--text2);line-height:1.5}
.tool-card .tool-link{display:inline-block;margin-top:6px;font-size:.8rem;color:var(--accent3);font-family:var(--font-mono)}
.tool-stat{display:inline-flex;align-items:center;gap:4px;margin-top:8px;font-size:.7rem;color:var(--text3);font-family:var(--font-mono);padding:3px 8px;border-radius:6px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.04)}
.tool-stat::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--accent3);animation:pulse 2s ease-in-out infinite}

/* ─── Password ─── */
.password-card{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius);padding:24px;max-width:500px;text-align:center;margin:0 auto}
.password-display{font:700 1.8rem var(--font-mono);background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin:12px 0;cursor:pointer;transition:opacity .2s;user-select:all}
.password-display:hover{opacity:.8}
.password-hint{font-size:.78rem;color:var(--text3);margin-bottom:4px}
.password-steps{text-align:left;margin-top:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,.04)}
.password-steps p{font-size:.82rem;color:var(--text2);margin-bottom:4px}
.password-warn{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;color:var(--accent3);font-weight:500}

/* ─── Join / Pricing ─── */
.join-wrap{max-width:820px;margin:0 auto}
.join-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.join-card{background:var(--card);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);padding:28px 24px;text-align:center;transition:all .3s var(--ease);cursor:pointer;position:relative;overflow:hidden}
.join-card:hover{border-color:rgba(124,58,237,.2)}
.join-card.basic{border-color:rgba(6,182,212,.15)}
.join-card.basic:hover{border-color:rgba(6,182,212,.3)}
.join-card.premium{border-color:rgba(124,58,237,.2)}
.join-card.premium:hover{border-color:rgba(124,58,237,.4)}
.join-card h3{font-size:1.1rem;font-weight:600;margin-bottom:4px}
.join-card .join-sub{font-size:.78rem;color:var(--text3);margin-bottom:12px}
.join-card .join-main-price{font:700 2rem var(--font-mono);background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.join-card .join-main-label{font-size:.78rem;color:var(--text2);margin-top:2px}
.join-card .join-badge{display:inline-block;margin-top:8px;padding:3px 12px;border-radius:12px;font-size:.7rem;font-weight:600}
.join-card.basic .join-badge{background:rgba(245,158,11,.15);color:var(--gold);border:1px solid rgba(245,158,11,.25)}
.join-card.premium .join-badge{background:rgba(124,58,237,.15);color:var(--accent);border:1px solid rgba(124,58,237,.25)}
.join-card .join-expand-icon{display:inline-flex;align-items:center;gap:4px;margin-top:10px;font-size:.75rem;color:var(--text3);cursor:pointer;transition:all .3s var(--ease)}
.join-card .join-expand-icon .arrow-d{display:inline-block;width:8px;height:8px;border-right:2px solid var(--text3);border-bottom:2px solid var(--text3);transform:rotate(45deg);transition:transform .35s var(--ease);margin-top:-3px}
.join-card.expanded .join-expand-icon .arrow-d{transform:rotate(-135deg);margin-top:3px}
.join-card .join-main-cta{display:block;margin:16px auto 0;padding:10px 0;border-radius:var(--radius-sm);background:var(--accent-gradient);color:#fff;font-size:.88rem;font-weight:600;transition:all .25s;text-align:center;max-width:200px;letter-spacing:.02em;position:relative;overflow:hidden}
.join-card .join-main-cta:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(124,58,237,.3);max-width:220px}
.join-card .join-main-cta::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.15),transparent);transform:translateX(-100%);transition:transform .5s}
.join-card .join-main-cta:hover::after{transform:translateX(100%)}
.join-card .join-main-cta-line{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:.78rem;color:var(--accent3);border-bottom:1px dashed rgba(6,182,212,.2);padding-bottom:2px;cursor:pointer}

/* Expanded details */
.join-details{max-height:0;overflow:hidden;transition:max-height .45s var(--ease),opacity .3s var(--ease);opacity:0;text-align:left}
.join-card.expanded .join-details{max-height:600px;opacity:1}
.join-details-inner{padding-top:16px;border-top:1px solid rgba(255,255,255,.06);margin-top:16px}
.join-details h4{font-size:.82rem;font-weight:600;color:var(--text);margin-bottom:8px;text-align:center}
.join-details ul{list-style:none;padding:0;margin:0 0 16px}
.join-details li{font-size:.78rem;color:var(--text2);line-height:1.7;padding-left:16px;position:relative}
.join-details li::before{content:'▸';position:absolute;left:0;color:var(--accent)}
.join-sub-plans{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:12px}
.join-sub-plan{padding:8px 14px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.06);background:rgba(255,255,255,.02);min-width:90px;text-align:center;transition:all .2s}
.join-sub-plan:hover{border-color:rgba(124,58,237,.2);background:rgba(124,58,237,.04)}
.join-sub-plan .sub-price{font:700 .9rem var(--font-mono);color:var(--text)}
.join-sub-plan .sub-label{font-size:.65rem;color:var(--text3);margin-top:2px}
.join-sub-plan.hot{border-color:rgba(245,158,11,.25)}
.join-sub-plan.hot .sub-price{color:var(--gold)}
.join-sub-plan.rec{border-color:rgba(124,58,237,.2)}
.join-sub-plan.rec .sub-price{color:var(--accent)}
.join-card .tel-link{margin-top:10px;font-size:.75rem;color:var(--text3);text-align:center}
.join-card .tel-link a{color:var(--accent3)}

/* ─── Team ─── */
.team-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:500px;margin:0 auto}
@media(max-width:480px){.team-grid{grid-template-columns:1fr}}
.team-card{background:var(--card);border:1px solid rgba(255,255,255,.04);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:all .3s var(--ease)}
.team-card:hover{border-color:rgba(124,58,237,.15);transform:translateY(-3px)}
.team-avatar{width:64px;height:64px;border-radius:50%;background:var(--accent-gradient);margin:0 auto 14px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;font-weight:700;color:#fff;position:relative}
.team-card h4{font-weight:600;font-size:1rem;margin-bottom:2px}
.team-role{font-size:.75rem;color:var(--accent);font-family:var(--font-mono);margin-bottom:10px}
.team-card p{font-size:.82rem;color:var(--text2);line-height:1.6;max-width:220px;margin:0 auto}
.team-hover-tip{font-size:.75rem;color:var(--text3);margin-top:10px;opacity:0;transition:opacity .3s var(--ease);font-style:italic}
.team-card:hover .team-hover-tip{opacity:1}
.team-connect{text-align:center;margin-top:20px;font-size:.78rem;color:var(--text3)}
.team-connect span{display:inline-block;background:rgba(124,58,237,.08);padding:6px 16px;border-radius:20px;color:var(--text2)}

/* ─── Toast ─── */
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--card);border:1px solid rgba(124,58,237,.2);color:var(--text);padding:10px 20px;border-radius:var(--radius-sm);font-size:.85rem;z-index:9999;opacity:0;transition:all .35s var(--ease);pointer-events:none;box-shadow:0 4px 20px rgba(0,0,0,.4)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ─── Footer ─── */
footer{padding:32px 24px;text-align:center;font-size:.78rem;color:var(--text3);border-top:1px solid rgba(255,255,255,.04)}
footer a{color:var(--text2)}
footer a:hover{color:var(--accent)}

/* ─── Scroll Reveal ─── */
.reveal{opacity:0;transform:translateY(24px);transition:all .6s var(--ease)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}
.reveal-delay-4{transition-delay:.4s}
.reveal-delay-5{transition-delay:.5s}

/* ─── Back to Top ─── */
.back-to-top{position:fixed;bottom:28px;right:28px;z-index:1000;width:44px;height:44px;border-radius:50%;border:none;background:var(--accent-gradient);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transform:translateY(20px) scale(.8);pointer-events:none;transition:all .35s var(--ease);box-shadow:0 0 20px rgba(124,58,237,.3)}
.back-to-top.visible{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.back-to-top:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 0 30px rgba(37,99,235,.25)}
.back-to-top .arrow-up{width:0;height:0;border-left:7px solid transparent;border-right:7px solid transparent;border-bottom:10px solid #fff}

/* ─── Section Glow ─── */
.section-wrap{position:relative}
.section-glow{position:absolute;width:500px;height:500px;border-radius:50%;filter:blur(150px);pointer-events:none;opacity:.3;will-change:transform}
.section-glow.g-left{left:-250px;top:10%;background:var(--accent)}
.section-glow.g-right{right:-250px;top:30%;background:var(--accent2)}
.section-glow.g-accent{left:50%;top:-20%;transform:translateX(-50%);background:var(--accent3);opacity:.06;width:400px;height:400px}

/* ─── Reduced Motion ─── */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .grain,.cursor-glow,.scroll-progress{display:none!important}
}

/* ─── Responsive ─── */
@media(max-width:768px){
  nav.scrolled{background:rgba(10,10,15,.97)}
  .nav-inner{height:54px;padding:0 16px}
  .nav-links{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(10,10,15,.97);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:80px 24px;z-index:-1;opacity:0;pointer-events:none;transition:opacity .35s var(--ease)}
  .nav-links.open{opacity:1;pointer-events:auto}
  .nav-links a{font-size:1.1rem;padding:12px 24px;width:100%;max-width:280px;text-align:center}
  .nav-links a::before{display:none}
  .nav-links a.active{background:var(--accent-gradient);color:#fff;border-radius:12px}
  .nav-links .nav-cta{margin-left:0;margin-top:8px;padding:12px 24px;max-width:280px;width:100%;text-align:center}
  .hamburger{display:flex;z-index:10}
  .about-grid{grid-template-columns:1fr}
  .stats-grid{gap:8px}
  .hero-stats{gap:20px}
  section{padding:48px 0}
  .nav-logo{z-index:10}
  .nav-right{z-index:10}
  .section-header{text-align:center}
  .section-header .section-desc{margin:0 auto}
  .resource-meta span{font-size:.6rem}
  .resource-item{padding:10px 12px;gap:8px}
  .join-card{padding:24px 16px}
  .join-plans{gap:8px}
  .join-plan{min-width:120px;padding:10px 14px}
  .back-to-top{bottom:16px;right:16px;width:40px;height:40px}
  .join-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .resource-meta{display:none}
}