/* 好汉子 AI 梦工厂 · 正式版 v3（庚 · 玻璃科技感，照 360 AI + 哩布的卡）
   令牌：浅底 + 天青渐变 + 白玻璃卡 + 细网格 + 青光点缀 */
:root{
  --bg:#f5f9fb; --paper:#fff; --ink:#000; --dim:#0a1218; --dim2:#2a343d;
  --line:#e2ecef; --cy:#17b8a6; --cy2:#3fc9e0; --mint:#8fe3cf;
  --soft:0 10px 30px rgba(18,90,105,.07);
  --mono:"KaiTi","楷体","STKaiti","Kaiti SC",serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font:16.5px/1.85 "KaiTi","楷体","STKaiti","Kaiti SC","AR PL UKai CN",serif;letter-spacing:.3px;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column}
/* 背景：柔光 + 工程网格（上显下隐） */
body::before{content:'';position:fixed;inset:0;z-index:-2;pointer-events:none;background:
 radial-gradient(820px 460px at 10% -6%, rgba(63,201,224,.22), transparent 64%),
 radial-gradient(700px 420px at 94% -2%, rgba(143,227,207,.24), transparent 62%),
 radial-gradient(900px 520px at 50% 106%, rgba(23,184,166,.10), transparent 62%)}
body::after{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
 background-image:
  linear-gradient(rgba(23,184,166,.055) 1px,transparent 1px),
  linear-gradient(90deg,rgba(23,184,166,.055) 1px,transparent 1px);
 background-size:44px 44px;
 -webkit-mask-image:linear-gradient(#000 0%,rgba(0,0,0,.55) 38%,transparent 86%);
 mask-image:linear-gradient(#000 0%,rgba(0,0,0,.55) 38%,transparent 86%)}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.wrap{max-width:1240px;margin:0 auto;padding:0 18px}

/* 顶部光带 */
.topglow{position:fixed;top:0;left:0;right:0;height:2px;z-index:30;background:linear-gradient(90deg,transparent,#3fc9e0 25%,#17b8a6 55%,transparent)}

/* 顶栏 */
.bar{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid rgba(226,236,239,.9);box-shadow:0 6px 18px rgba(18,90,105,.05)}
.bar-in{max-width:1240px;margin:0 auto;padding:0 18px;height:60px;display:flex;align-items:center;gap:22px}
.logo{display:flex;align-items:center;gap:9px;font-weight:500;font-size:15px;letter-spacing:.5px;white-space:nowrap}
.logo i{width:27px;height:27px;border-radius:9px;background:linear-gradient(135deg,#3fc9e0,#12a894);color:#fff;display:grid;place-items:center;font-style:normal;font-size:13px;box-shadow:0 4px 12px rgba(23,184,166,.32)}
.nav{display:grid;grid-template-columns:repeat(6,1fr);flex:1;margin:0 20px;gap:0;min-width:0;font-size:14.5px;color:var(--dim)}
.nav::-webkit-scrollbar{display:none}
.nav a{min-width:0;padding:8px 8px;border-radius:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:.18s;text-align:center}
.nav a:hover{color:var(--cy);background:rgba(23,184,166,.07)}
.nav a.on{color:#0d8a7c;background:rgba(23,184,166,.12);font-weight:500}
.bar-r{margin-left:auto;display:flex;gap:9px;align-items:center}
.ghost{font-size:13.5px;color:var(--dim);border:1px solid var(--line);background:rgba(255,255,255,.7);padding:7px 13px;border-radius:20px;white-space:nowrap}
.grad{font-size:12.5px;color:#fff;background:linear-gradient(90deg,#2ec9d8,#12a894);padding:8px 16px;border-radius:20px;font-weight:500;box-shadow:0 6px 16px rgba(23,184,166,.28);white-space:nowrap}

/* 首屏 */
.hero{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 60px);padding:0}
.hero-t{max-width:min(1180px,92vw);margin:0 auto;text-align:center}
.kick{display:inline-flex;align-items:center;gap:9px;font-size:clamp(11.5px,1vw,13px);letter-spacing:2px;color:#0d8a7c;background:rgba(23,184,166,.10);border:1px solid rgba(23,184,166,.18);border-radius:10px;padding:7px 16px;margin-bottom:26px}
.kick b{width:6px;height:6px;border-radius:50%;background:var(--cy);box-shadow:0 0 10px var(--cy);animation:blip 2.4s ease-in-out infinite}
@keyframes blip{0%,100%{opacity:.4;transform:scale(.8)}50%{opacity:1;transform:scale(1)}}
h1{font-size:clamp(30px,4.6vw,62px);font-weight:400;line-height:1.55;letter-spacing:1px;margin-bottom:22px}
h1 em{font-style:normal;background:linear-gradient(90deg,#17b8a6,#3fc9e0);-webkit-background-clip:text;background-clip:text;color:transparent}
.ul{width:92px;height:3px;border-radius:2px;background:linear-gradient(90deg,#17b8a6,#3fc9e0);margin:0 auto 26px;box-shadow:0 0 12px rgba(23,184,166,.5)}
.sub{color:var(--dim);font-size:clamp(13.5px,1.15vw,16px);max-width:min(720px,86vw);line-height:2;margin:0 auto 30px}
/* 参数条：等宽小字，最像机器的地方 */
.params{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;justify-content:center}
.par{display:flex;align-items:center;gap:7px;font-size:clamp(12.5px,1.05vw,14px);color:var(--dim);background:rgba(255,255,255,.68);border:1px solid var(--line);border-radius:11px;padding:8px 15px;font-family:var(--mono)}
.par b{color:#0d8a7c;font-weight:600}
.acts{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.a1{color:#fff;background:linear-gradient(90deg,#2ec9d8,#12a894);padding:14px 32px;border-radius:28px;font-size:clamp(14px,1.15vw,16px);font-weight:500;box-shadow:0 10px 26px rgba(23,184,166,.32)}
.a2{padding:14px 30px;border-radius:28px;border:1px solid #d5e5ea;background:rgba(255,255,255,.8);color:var(--dim);font-size:clamp(14px,1.15vw,16px)}

/* 首屏视觉 + AI 徽标 + 神经网 */
.visual{position:relative;border:0;background:none;box-shadow:none;padding:0;border-radius:0;overflow:visible}
.visual .m{position:relative}
.visual .m img{width:100%;display:block;border-radius:16px;aspect-ratio:16/9;object-fit:cover;object-position:50% 46%}


.visual .cap{position:absolute;left:12px;bottom:12px;font-size:11.5px;color:#08363a;background:rgba(255,255,255,.86);padding:4px 10px;border-radius:8px;backdrop-filter:blur(6px);z-index:2}
.emblem{position:absolute;right:8px;top:-26px;width:130px;height:130px;pointer-events:none;filter:drop-shadow(0 8px 22px rgba(23,184,166,.28))}
.emblem svg{width:100%;height:100%}
.orbit{transform-origin:50% 50%;animation:spin 18s linear infinite}
.orbit2{transform-origin:50% 50%;animation:spin 26s linear infinite reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.net{position:absolute;right:-6px;bottom:-10px;width:170px;opacity:.8;pointer-events:none;z-index:1}

/* 区块标题（左对齐 + 小图案） */
.mid{display:flex;align-items:center;justify-content:center;gap:10px;margin:44px 0 16px;position:relative}
.mid svg{flex:0 0 20px;opacity:.85}
.mid h2{font-size:clamp(18px,2.4vw,24px);font-weight:500;letter-spacing:.1px}
.mid span{font-size:13px;color:var(--dim2)}
.mid .more{position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:12.5px;color:var(--cy);white-space:nowrap}

/* 图卡（三排） */
.shots{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.shot{background:#fff;border:1px solid #e8f1f4;border-radius:16px;overflow:hidden;box-shadow:var(--soft);transition:.26s;position:relative;display:block}
.shot:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(18,90,105,.12);border-color:#cfebef}
.shot::after{content:'';position:absolute;inset:0;border-radius:16px;pointer-events:none;box-shadow:inset 0 0 0 1px rgba(63,201,224,0);transition:.3s}
.shot:hover::after{box-shadow:inset 0 0 0 1px rgba(63,201,224,.55),0 0 22px rgba(63,201,224,.22)}
.shot .im{position:relative;overflow:hidden;background:#0d1114}
.shot .im img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;transition:.45s}
.shot:hover .im img{transform:scale(1.045)}
.shot .no{position:absolute;left:9px;top:9px;font-size:10px;letter-spacing:1px;color:#eaf6f7;background:rgba(10,25,30,.5);backdrop-filter:blur(4px);padding:2px 7px;border-radius:6px;font-family:var(--mono);z-index:2}
.shot .tag{position:absolute;right:9px;top:9px;font-size:10px;color:#0b3f43;background:rgba(255,255,255,.88);padding:2px 7px;border-radius:6px;display:flex;align-items:center;gap:3px;z-index:2}
.shot .lb{padding:10px 12px 12px;display:flex;align-items:baseline;gap:6px}
.shot .lb b{font-size:12.5px;font-weight:600}
.shot .lb span{font-size:11px;color:var(--dim2);margin-left:auto;text-align:right;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:56%;flex:0 1 auto}

/* 工具卡 */
.tools{display:grid;grid-template-columns:1fr;gap:12px}
.tool{position:relative;background:linear-gradient(165deg,rgba(255,255,255,.97),rgba(240,251,251,.88));border:1px solid #e8f1f4;border-radius:18px;padding:18px;box-shadow:var(--soft);overflow:hidden;display:block;transition:.24s}
.tool:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(18,90,105,.11);border-color:#cfebef}
.tool::before{content:'';position:absolute;right:-60px;top:-60px;width:150px;height:150px;border-radius:50%;background:radial-gradient(circle,rgba(63,201,224,.16),transparent 70%)}
.tool .hd{display:flex;align-items:center;gap:10px;margin-bottom:7px}
.tool .ico{width:32px;height:32px;border-radius:10px;background:rgba(23,184,166,.12);color:#0d8a7c;display:grid;place-items:center;font-size:13px}
.tool h3{font-size:14.5px;font-weight:600}
.tool p{font-size:12.5px;color:var(--dim);margin-bottom:10px}
.tool ul{list-style:none;display:flex;flex-wrap:wrap;gap:5px 14px}
.tool li{font-size:11.5px;color:var(--dim2)}
.tool li s{color:var(--cy);text-decoration:none;margin-right:4px}
.tool .pl{display:flex;gap:6px;margin-top:11px;flex-wrap:wrap}
.pill{font-size:10.5px;color:var(--dim);background:#f2f8fa;border:1px solid #e4eef1;border-radius:6px;padding:2px 8px}
.pill.w{color:#a8823a;background:#fdf7ee;border-color:#f0e3cd}

/* 教程行 */
.items2{display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:620px){.items2{grid-template-columns:1fr 1fr}}
.item{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid #e8f1f4;border-radius:13px;padding:14px 16px;margin-bottom:0;min-height:58px;box-shadow:var(--soft);transition:.2s}
.item:hover{border-color:#cfebef;transform:translateX(3px)}
.item time{font-size:12.5px;color:var(--dim);flex:0 0 48px;font-family:var(--mono)}
.item b{font-size:15.5px;font-weight:500;flex:1;line-height:1.6}
.item .go{font-size:13px;color:#0f9c8c}

/* 列表页卡片（通用） */
.cards{display:grid;grid-template-columns:1fr;gap:14px;margin:20px 0 8px}
.card{position:relative;background:linear-gradient(165deg,rgba(255,255,255,.96),rgba(238,250,250,.86));border:1px solid #e8f1f4;border-radius:20px;padding:22px 20px 64px;box-shadow:var(--soft);overflow:hidden;transition:.28s;display:block}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 42px rgba(18,90,105,.11);border-color:#d9ecef}
.card::after{content:'';position:absolute;right:-70px;bottom:-70px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(63,201,224,.14),transparent 70%)}
.chip{display:inline-block;font-size:10.5px;color:#0d8a7c;background:rgba(23,184,166,.09);border-radius:6px;padding:2px 8px;margin-bottom:10px}
.card h3{font-size:16px;font-weight:600;margin-bottom:6px}
.card p{font-size:12.5px;color:var(--dim);line-height:1.72}
.arrow{position:absolute;right:18px;bottom:18px;width:34px;height:34px;border-radius:50%;border:1px solid #d6e6ea;display:grid;place-items:center;color:var(--dim);font-size:13px;background:rgba(255,255,255,.8);transition:.2s}
.card:hover .arrow{background:linear-gradient(90deg,#2ec9d8,#12a894);color:#fff;border-color:transparent}

/* 内页 */
.head{padding:48px 0 18px}
.head .kick{margin-bottom:10px}
.head h1{font-size:clamp(23px,3.2vw,32px);margin-bottom:8px}
.head .lead,.intro{color:var(--dim);font-size:14px;max-width:660px;margin-top:6px}
.narrow{max-width:820px}
.back{font-size:12.5px;color:var(--dim2)}
.videowrap{display:flex;flex-direction:column;align-items:center;gap:12px;padding:10px 0 4px}
.vplayer{width:100%;max-width:100%;margin:0 auto;display:block;aspect-ratio:16/9;border-radius:18px;border:1px solid #e8f1f4;background:radial-gradient(ellipse at 50% 50%,#0b2328 0%,#071a1f 100%);box-shadow:0 14px 34px rgba(18,90,105,.14);object-fit:contain}
/* 竖屏视频：自动收成竖框，画面铺满不留黑边 */
.vplayer.portrait{max-width:380px;background:#0a1218;box-shadow:0 16px 38px rgba(18,90,105,.18)}
@media(max-width:620px){.vplayer.portrait{max-width:100%}}
.vnote{font-size:12px;color:var(--dim2);text-align:center;max-width:560px}
.stills{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:26px 0 8px}
.stills img{width:100%;border-radius:14px;border:1px solid #e8f1f4;box-shadow:var(--soft);display:block;transition:.3s}
.stills a:hover img{transform:translateY(-3px);box-shadow:0 16px 34px rgba(18,90,105,.14)}
.dl{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:16px;padding:16px 18px;margin:24px 0 10px;box-shadow:var(--soft)}
.dl-t{display:flex;flex-direction:column;gap:3px}
.dl-t b{font-size:15px}
.dl-t span{font-size:12px;color:var(--dim)}
.sha{font-family:var(--mono);font-size:11.5px;color:var(--dim2);word-break:break-all;margin-bottom:8px}

/* 正文 */
.prose{margin-top:22px;font-size:15px;color:#26313c}
.prose h2{font-size:20px;font-weight:600;margin:32px 0 12px;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:8px}
.prose h3{font-size:16px;margin:22px 0 9px;color:var(--ink)}
.prose p{margin:13px 0}
.prose ul,.prose ol{margin:13px 0 13px 1.4em}
.prose li{margin:6px 0}
.prose a{color:var(--cy)}
.prose code{background:rgba(23,184,166,.08);color:#0d8a7c;padding:2px 6px;border-radius:5px;font-size:13px;font-family:var(--mono)}
.prose pre{background:#0c1a22;color:#cfe9f0;padding:16px;border-radius:12px;overflow:auto;font-size:12.5px;margin:16px 0;font-family:var(--mono)}
.prose blockquote{margin:16px 0;padding:10px 16px;background:rgba(23,184,166,.07);border-left:3px solid var(--cy);border-radius:8px;color:#33586a}
.prose table{border-collapse:collapse;width:100%;font-size:13px;margin:18px 0;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;white-space:nowrap}
.prose th{background:rgba(23,184,166,.06);color:var(--dim)}
.prose img{max-width:420px;border-radius:14px;border:1px solid var(--line);box-shadow:var(--soft);margin:18px 0}
.head h1{font-weight:400;letter-spacing:.5px}

/* 页脚 */
.foot{margin-top:auto;border-top:1px solid var(--line);padding:22px 0 60px}
.foot-in{display:flex;flex-wrap:wrap;gap:14px 22px;align-items:center;font-size:13.5px;color:var(--dim2);justify-content:space-between}
.foot-in a{color:var(--dim)}
.fnav{display:grid;grid-template-columns:repeat(6,1fr);flex:1;margin:0 36px;font-size:12.5px;min-width:0}
.fnav a{text-align:center}
.foot-in .me{margin-left:0;text-align:right}

@media(prefers-reduced-motion:reduce){ .orbit,.orbit2,.kick b{animation:none} }
@media(min-width:620px){ .shots{grid-template-columns:repeat(3,1fr)} .tools{grid-template-columns:1fr 1fr} .cards{grid-template-columns:1fr 1fr} }
@media(min-width:900px){
 .hero{min-height:calc(100vh - 60px)}

 .stills{grid-template-columns:repeat(4,1fr)}
}

/* ===== 三列玻璃功能卡（照 360 模型矩阵） ===== */
.gcards{display:grid;grid-template-columns:1fr;gap:16px;grid-auto-rows:1fr;align-items:stretch}
.gcard{position:relative;display:flex;flex-direction:column;border-radius:20px;padding:18px 18px 58px;min-height:224px;
 background:linear-gradient(168deg,rgba(255,255,255,.94) 0%,rgba(226,246,250,.86) 46%,rgba(206,240,247,.78) 100%);
 border:1px solid rgba(255,255,255,.92);
 box-shadow:0 10px 30px rgba(18,90,105,.07),inset 0 1px 0 rgba(255,255,255,.9);
 overflow:hidden;transition:.28s}
.gcard::before{content:'';position:absolute;right:-90px;top:-80px;width:240px;height:240px;border-radius:50%;
 background:radial-gradient(circle,rgba(63,201,224,.20),rgba(143,227,207,.10) 55%,transparent 72%)}
.gcard:hover{transform:translateY(-4px);box-shadow:0 18px 42px rgba(18,90,105,.13)}
.gcard .gl{display:inline-block;font-size:13.5px;color:#07303a;letter-spacing:.5px;margin-bottom:9px}
.gcard h3{font-size:clamp(19px,2vw,23px);font-weight:500;line-height:1.45;margin-bottom:10px;letter-spacing:0}
.gcard p{font-size:15px;color:#0a1218;line-height:1.8;max-width:34em;padding-right:52px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.gcard .ga{position:absolute;left:20px;bottom:20px;width:48px;height:26px;border-radius:15px;border:1px solid rgba(20,60,70,.28);
 display:grid;place-items:center;color:#2b5560;background:rgba(255,255,255,.55);transition:.24s}
.gcard:hover .ga{background:#fff;color:#0d8a7c;border-color:rgba(23,184,166,.5)}
/* 高亮卡：渐变描边 + 渐变箭头 */
.gcard.hot{border:1px solid transparent;
 background:
  linear-gradient(168deg,rgba(255,255,255,.96) 0%,rgba(214,246,251,.9) 46%,rgba(178,238,247,.85) 100%) padding-box,
  linear-gradient(120deg,#3fc9e0,#17b8a6 50%,#8fe3cf) border-box;
 box-shadow:0 16px 38px rgba(23,140,160,.18),inset 0 0 0 1px rgba(63,201,224,.5)}
.gcard.hot .ga{background:linear-gradient(90deg,#2ec9d8,#12a894);border-color:transparent;color:#fff;box-shadow:0 6px 16px rgba(23,184,166,.34)}
/* 第二批卡：右下淡色插画（我们的剧照当底纹） */

.gcards.wide{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.gcards.wide .gcard{min-height:184px}
.gcards.wide .gcard p{display:block;-webkit-line-clamp:unset;overflow:visible}
.gcard .gi{position:absolute;right:-26px;bottom:-34px;width:64%;aspect-ratio:1;height:auto;pointer-events:none;
 -webkit-mask-image:radial-gradient(ellipse at 72% 72%,#000 0%,rgba(0,0,0,.55) 34%,rgba(0,0,0,.16) 62%,transparent 76%);
 mask-image:radial-gradient(ellipse at 72% 72%,#000 0%,rgba(0,0,0,.55) 34%,rgba(0,0,0,.16) 62%,transparent 76%);
 opacity:.5;filter:saturate(.55) brightness(1.25) blur(.4px);border-radius:18px;overflow:hidden}
.gcard .gi img{width:100%;height:100%;object-fit:cover;display:block}
.gcard:hover .gi{opacity:.42}
/* 行间小标题（照“360CV大模型”） */
.g-wrap-title{text-align:center;font-size:clamp(16px,2vw,20px);font-weight:500;letter-spacing:.4px;color:#123039;margin:26px 0 14px}

@media(min-width:620px){ .gcards{grid-template-columns:repeat(3,1fr)} }
@media(min-width:900px){ .gcard{padding:20px 20px 70px} .gcard .ga{left:20px;bottom:20px} }
/* footer narrow */
@media(max-width:899px){.fnav{display:flex;justify-content:center;gap:20px;margin:0 16px}.fnav a{white-space:nowrap}.foot-in{justify-content:center}.foot-in .me{margin:6px 0 0;text-align:center;flex-basis:100%}}

/* nav narrow */
@media(max-width:899px){.nav{display:flex;gap:11px;margin:0 8px;overflow-x:auto;font-size:13.5px}.nav a{flex:0 0 auto;padding:8px 3px;overflow:visible;text-overflow:clip}}

/* band */
.band{min-height:calc(100vh - 60px);display:flex;flex-direction:column;justify-content:center;padding:56px 0 40px;border-top:1px solid rgba(23,184,166,.10)}
.band .mid{margin-top:0}
@media(max-height:900px){.band{min-height:auto;padding:64px 0 46px}}

/* ink weight */
.gcard p,.sub,.nav a,.item b,.item time,.mid span,.foot-in,.par,.gl{font-weight:400}
.gcard h3{font-weight:500}


/* posts bottom */
.posts-wrap{display:flex;flex-direction:column;min-height:calc(100vh - 216px)}
.posts-wrap .items2{margin-top:auto;padding-bottom:8px}

/* snap */
html.snap{scroll-snap-type:y mandatory}
.hero,.band{scroll-snap-align:start;scroll-snap-stop:always;height:calc(100vh - 60px);min-height:0;padding-top:0;padding-bottom:0}
.foot{scroll-snap-align:end}

/* faint ai */
.hero,.band{position:relative}
.fx{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.hero-t,.mid,.gcards,.posts-wrap .items2{position:relative;z-index:1}
.fx .blob{position:absolute;border-radius:50%;filter:blur(2px);opacity:.55}
.fx .b1{width:520px;height:520px;left:-170px;top:-150px;background:radial-gradient(circle,rgba(63,201,224,.20),rgba(63,201,224,0) 68%)}
.fx .b2{width:620px;height:620px;right:-200px;bottom:-260px;background:radial-gradient(circle,rgba(143,227,207,.22),rgba(143,227,207,0) 70%)}
.fx .b3{width:320px;height:320px;left:8%;bottom:-140px;background:radial-gradient(circle,rgba(23,184,166,.14),rgba(23,184,166,0) 70%)}
.fx .b4{width:480px;height:480px;right:-160px;top:-180px;background:radial-gradient(circle,rgba(63,201,224,.16),rgba(63,201,224,0) 70%)}
.fx .b5{width:420px;height:420px;left:-140px;bottom:-160px;background:radial-gradient(circle,rgba(143,227,207,.18),rgba(143,227,207,0) 70%)}
.fx .net{position:absolute;width:min(900px,86vw);height:auto;opacity:.16;right:-2%;top:8%;animation:fxDrift 22s ease-in-out infinite alternate}
.fx .net:first-of-type{right:-2%;top:6%}
.fx .net{left:auto}
@keyframes fxDrift{from{transform:translateY(-8px)}to{transform:translateY(10px)}}
@media(prefers-reduced-motion:reduce){.fx .net{animation:none}}
/* page head */
.pagehead{position:relative;text-align:center;padding:clamp(34px,6vh,66px) 0 clamp(18px,3vh,30px)}
.pagehead>*:not(.fx){position:relative;z-index:1}
.pagehead .fx .blob{opacity:.4}
.pagehead .back{display:block;width:max-content;margin:0 auto 14px;color:var(--dim2);font-size:13px}
.pagehead h1{font-size:clamp(28px,4.2vw,50px);font-weight:400;line-height:1.4;letter-spacing:.5px;margin:0 0 16px}
.pagehead .ul{margin:0 auto 18px}
.pagehead .lead,.pagehead .intro{max-width:min(760px,90vw);margin:0 auto;color:var(--dim);font-size:15.5px;line-height:2}
.pagehead .intro p{margin:0}
.panel{background:linear-gradient(168deg,rgba(255,255,255,.96) 0%,rgba(231,249,251,.9) 100%);border:1px solid rgba(255,255,255,.92);border-radius:22px;padding:26px 28px 28px;box-shadow:0 12px 34px rgba(18,90,105,.08),inset 0 1px 0 rgba(255,255,255,.9);margin:24px 0}
.prose{margin-top:0}
.prose h2{font-size:clamp(18px,2.2vw,21px);font-weight:500}
.prose p{color:#0a1218;font-size:15.5px}
.prose li{color:#0a1218}
@media(max-width:620px){.panel{padding:18px 16px 20px;border-radius:18px}}
/* breathe */
.fx .blob{animation:fxBreathe 18s ease-in-out infinite}
.fx .b1{animation-delay:-2s}
.fx .b2{animation-delay:-7s}
.fx .b3{animation-delay:-11s}
.fx .b4{animation-delay:-4s}
.fx .b5{animation-delay:-13s}
@keyframes fxBreathe{0%,100%{opacity:.10;transform:scale(.94)}46%{opacity:.50;transform:scale(1.06)}}
.fx .net{animation:fxNet 20s ease-in-out infinite,fxDrift 24s ease-in-out infinite alternate}
@keyframes fxNet{0%,100%{opacity:.04}50%{opacity:.17}}
.fx .dot{position:absolute;width:5px;height:5px;border-radius:50%;background:#3fc9e0;opacity:0;animation:fxDot 16s ease-in-out infinite}
.fx .da{left:14%;top:62%;animation-delay:-1s}
.fx .db{right:12%;top:38%;width:4px;height:4px;animation-delay:-6s}
.fx .dc{left:46%;top:18%;width:3px;height:3px;animation-delay:-11s}
.fx .dd{left:22%;top:34%;animation-delay:-9s}
.fx .de{right:22%;top:70%;width:4px;height:4px;animation-delay:-14s}
@keyframes fxDot{0%,100%{opacity:0;transform:translateY(0) scale(.7)}18%{opacity:.42}50%{opacity:.55;transform:translateY(-26px) scale(1)}82%{opacity:.18}}
@media(prefers-reduced-motion:reduce){.fx .blob,.fx .net,.fx .dot{animation:none;opacity:.12}}
/* ===== 注册 / 登录 弹窗 ===== */
.amask{position:fixed;inset:0;background:rgba(6,40,48,.45);backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;z-index:100}
.amask.on{display:flex}
.abox{position:relative;width:min(380px,92vw);background:#fff;border-radius:22px;padding:28px 26px 22px;box-shadow:0 30px 80px rgba(6,50,60,.35)}
.abox .ax{position:absolute;right:14px;top:12px;border:none;background:none;font-size:18px;color:#8aa;cursor:pointer}
.abox .alogo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:16px;color:#0e6f7a;margin-bottom:18px;justify-content:center}
.abox .alogo i{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,#46d2e7,#0f9c8a);color:#fff;display:grid;place-items:center;font-style:normal;font-size:14px}
.abox .atabs{display:flex;gap:6px;background:#eef7f8;border-radius:12px;padding:4px;margin-bottom:16px}
.abox .atab{flex:1;border:none;background:none;padding:9px 0;border-radius:9px;font-size:14px;color:#6b8992;cursor:pointer}
.abox .atab.on{background:#fff;color:#0e6f7a;font-weight:600;box-shadow:0 3px 10px rgba(18,90,105,.12)}
.abox .afields{display:flex;flex-direction:column;gap:10px}
.abox .afields input{height:46px;border:1px solid #cfe2e7;border-radius:11px;padding:0 14px;font-size:15px;outline:none;color:#12303a;background:#fff}
.abox .afields input:focus{border-color:#46d2e7}
.abox .asub{margin-top:16px;width:100%;height:46px;border:none;border-radius:12px;color:#fff;font-size:15px;font-weight:600;background:linear-gradient(135deg,#46d2e7,#0f9c8a);cursor:pointer}
.abox .amsg{min-height:18px;font-size:12.5px;color:#c0392b;margin-top:8px;text-align:center}
.abox .atip{margin-top:10px;font-size:11.5px;color:#9fb3b9;text-align:center}