/* 全站样式 · 由 index.html 的内联 <style> 抽出，逐字一致
   首页与 /program /team 等子页面共用这一份。改样式改这里。 */

/* ============ 设计令牌 ============ */
:root{
  --bg:#04060c; --bg2:#080d18; --surface:#0c1322; --surface2:#101a30;
  --line:rgba(140,175,230,.13); --line2:rgba(140,175,230,.24);
  --text:#e8eefb; --muted:#93a4c8; --faint:#5c6d91;
  --blue:#38bdf8; --blue2:#0ea5e9; --deep:#0284c7; --amber:#f2c063; --gold:#d9b36a;
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --latin:"Barlow Condensed","Arial Narrow",var(--sans);
  --mono:"SF Mono",ui-monospace,"SFMono-Regular","Menlo","Courier New",monospace;
  --ease:cubic-bezier(.2,.65,.2,1);
  --nav-h:76px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 12px)}
body{background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.75;overflow-x:hidden;-webkit-font-smoothing:antialiased}
body.lock{overflow:hidden}
::selection{background:rgba(14,165,233,.35);color:#fff}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}

/* ============ 片头加载器 ============ */
#loader{position:fixed;inset:0;z-index:200;background:var(--bg);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:opacity .8s var(--ease)}
#loader.hide{opacity:0;pointer-events:none}
.loader-inner{text-align:center;position:relative;z-index:2;padding:0 24px}
.loader-logo{display:flex;flex-direction:column;align-items:center;gap:18px}
.loader-logo img{width:96px;height:96px;border-radius:50%;box-shadow:0 0 60px rgba(14,165,233,.35);animation:logoPulse 2.4s ease-in-out infinite}
@keyframes logoPulse{0%,100%{transform:scale(1);filter:drop-shadow(0 0 18px rgba(56,189,248,.4))}50%{transform:scale(1.06);filter:drop-shadow(0 0 34px rgba(56,189,248,.75))}}
.loader-name{font-size:26px;font-weight:700;letter-spacing:.42em;text-indent:.42em}
.loader-sub{margin-top:10px;font-family:var(--mono);font-size:11px;letter-spacing:.28em;color:var(--muted)}
.loader-bar{width:min(320px,70vw);height:2px;background:rgba(140,175,230,.15);margin:34px auto 0;border-radius:2px;overflow:hidden}
.loader-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--deep),var(--blue),var(--amber));border-radius:2px;transition:width .2s linear}
.loader-play{margin-top:30px;font-family:var(--sans);font-size:14px;letter-spacing:.18em;color:var(--text);background:rgba(14,165,233,.08);border:1px solid var(--line2);padding:12px 30px;border-radius:999px;cursor:pointer;transition:all .3s;animation:playPulse 2s ease-in-out infinite}
.loader-play:hover{background:rgba(14,165,233,.2);border-color:var(--blue);box-shadow:0 0 30px rgba(14,165,233,.25)}
@keyframes playPulse{0%,100%{opacity:1}50%{opacity:.6}}
.loader-letter{position:absolute;left:0;right:0;height:26vh;background:#000;transition:transform 1.1s var(--ease);z-index:3}
.loader-letter.top{top:0;transform-origin:top}
.loader-letter.bottom{bottom:0;transform-origin:bottom}
body.played .loader-letter.top{transform:scaleY(0)}
body.played .loader-letter.bottom{transform:scaleY(0)}

/* ============ 胶片颗粒 / 暗角 ============ */
.grain{position:fixed;inset:-120px;z-index:98;pointer-events:none;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");animation:grainShift 9s steps(8) infinite}
@keyframes grainShift{0%{transform:translate(0,0)}12%{transform:translate(-24px,18px)}25%{transform:translate(16px,-26px)}37%{transform:translate(-30px,-12px)}50%{transform:translate(12px,22px)}62%{transform:translate(-18px,-20px)}75%{transform:translate(26px,10px)}87%{transform:translate(-10px,28px)}100%{transform:translate(0,0)}}
.vignette{position:fixed;inset:0;z-index:97;pointer-events:none;background:radial-gradient(ellipse at center,transparent 55%,rgba(0,0,0,.5) 100%)}

/* ============ 光标光晕 ============ */
.cursor{position:fixed;top:0;left:0;width:120px;height:120px;border-radius:50%;z-index:96;pointer-events:none;mix-blend-mode:screen;background:radial-gradient(circle,rgba(56,189,248,.16),transparent 65%);transform:translate(-50%,-50%);display:none}
@media(pointer:fine){.cursor{display:block}}

/* ============ 导航 ============ */
header{position:fixed;top:0;left:0;right:0;z-index:120;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,4vw,48px);height:var(--nav-h);transition:background .4s,border-color .4s,backdrop-filter .4s;border-bottom:1px solid transparent}
header.scrolled{background:rgba(4,6,12,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom-color:var(--line)}
.brand{display:flex;align-items:center;gap:12px;cursor:pointer}
.brand img{width:38px;height:38px;border-radius:50%}
.brand .bname{font-size:15px;font-weight:700;letter-spacing:.14em}
.brand .bsub{display:block;font-family:var(--mono);font-size:9px;letter-spacing:.22em;color:var(--faint);font-weight:400;margin-top:-2px}
nav.main{display:flex;align-items:center;gap:clamp(14px,2.4vw,34px)}
nav.main a{font-size:14px;letter-spacing:.1em;color:var(--muted);position:relative;padding:6px 2px;transition:color .3s}
nav.main a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--blue);transition:width .35s var(--ease)}
nav.main a:hover,nav.main a.active{color:var(--text)}
nav.main a:hover::after,nav.main a.active::after{width:100%}
.nav-cta{padding:9px 22px;border-radius:999px;background:linear-gradient(135deg,var(--blue2),var(--deep));color:#fff;font-size:13px;letter-spacing:.12em;transition:transform .25s,box-shadow .25s;box-shadow:0 4px 20px rgba(14,165,233,.22)}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(14,165,233,.4)}
.nav-links-desktop{display:flex;align-items:center;gap:clamp(14px,2.4vw,34px)}
@media(max-width:860px){.nav-links-desktop{display:none}}

/* ============ 英雄区 ============ */
#hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;overflow:hidden;padding:calc(var(--nav-h) + 40px) 20px 80px}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-bg img{width:100%;height:100%;object-fit:cover;animation:kenburns 26s ease-in-out infinite alternate;will-change:transform}
@keyframes kenburns{from{transform:scale(1.04) translate(0,0)}to{transform:scale(1.16) translate(-1.5%,-1.5%)}}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,6,12,.62) 0%,rgba(4,6,12,.35) 40%,rgba(4,6,12,.88) 100%)}
.beam{position:absolute;top:-25%;width:26vw;height:150%;background:linear-gradient(to bottom,rgba(56,189,248,.16),transparent 72%);filter:blur(28px);transform:rotate(16deg);z-index:1;animation:beamSweep 16s ease-in-out infinite alternate;pointer-events:none}
.beam.b2{width:18vw;background:linear-gradient(to bottom,rgba(242,192,99,.10),transparent 72%);animation-duration:21s;animation-delay:-7s;right:4%}
@keyframes beamSweep{from{left:-14%}to{left:88%}}
.hero-inner{position:relative;z-index:2;max-width:980px}
.hero-tag{font-family:var(--mono);font-size:12px;letter-spacing:.5em;color:var(--blue);margin-bottom:26px;display:flex;align-items:center;justify-content:center;gap:14px}
.hero-tag::before,.hero-tag::after{content:"";width:44px;height:1px;background:linear-gradient(90deg,transparent,var(--blue2))}
.hero-tag::after{background:linear-gradient(90deg,var(--blue2),transparent)}
.hero-title{font-family:var(--serif);font-weight:900;font-size:clamp(40px,7.6vw,88px);line-height:1.18;letter-spacing:.02em}
.hero-title .line{display:block;overflow:hidden}
.hero-title .line span{display:inline-block;transform:translateY(110%);transition:transform 1.1s var(--ease)}
body.played .hero-title .line span{transform:translateY(0)}
.hero-title .grad{background:linear-gradient(120deg,#7dd3fc 0%,var(--blue2) 45%,var(--amber) 110%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-slogan{margin:30px auto 0;max-width:640px;font-size:clamp(15px,2vw,18px);color:var(--muted);line-height:2;opacity:0;transform:translateY(24px);transition:all 1s var(--ease) .9s}
body.played .hero-slogan{opacity:1;transform:none}
.hero-slogan em{font-style:normal;color:var(--text)}
.eq{display:flex;align-items:flex-end;gap:4px;height:30px;margin:34px auto 0;opacity:0;transition:opacity 1s var(--ease) 1.2s}
body.played .eq{opacity:1}
.eq i{width:3px;background:linear-gradient(to top,var(--deep),var(--blue));border-radius:2px;animation:eqBar 1.1s ease-in-out infinite alternate}
@keyframes eqBar{from{height:8%}to{height:100%}}
.hero-cta{display:flex;gap:16px;justify-content:center;margin-top:40px;flex-wrap:wrap;opacity:0;transform:translateY(24px);transition:all 1s var(--ease) 1.35s}
body.played .hero-cta{opacity:1;transform:none}
.btn{padding:15px 38px;border-radius:999px;font-size:15px;letter-spacing:.16em;cursor:pointer;transition:all .3s var(--ease);border:1px solid transparent;font-family:var(--sans)}
.btn-primary{background:linear-gradient(135deg,var(--blue2),var(--deep));color:#fff;box-shadow:0 8px 34px rgba(14,165,233,.3)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 44px rgba(14,165,233,.5)}
.btn-ghost{border-color:var(--line2);color:var(--text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--blue);background:rgba(56,189,248,.08);transform:translateY(-3px)}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--faint);font-family:var(--mono);font-size:10px;letter-spacing:.4em;opacity:0;transition:opacity 1s var(--ease) 1.8s}
body.played .scroll-hint{opacity:1}
.scroll-hint .wheel{width:1px;height:44px;background:rgba(140,175,230,.2);position:relative;overflow:hidden}
.scroll-hint .wheel::after{content:"";position:absolute;left:0;top:-40%;width:100%;height:40%;background:var(--blue);animation:wheelDrop 1.8s var(--ease) infinite}
@keyframes wheelDrop{to{top:110%}}

/* ============ 跑马灯 ============ */
.marquee{border-block:1px solid var(--line);overflow:hidden;padding:18px 0;background:linear-gradient(90deg,transparent,rgba(14,165,233,.05) 50%,transparent)}
.marquee-track{display:flex;width:max-content;animation:scrollX 38s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes scrollX{to{transform:translateX(-50%)}}
.marquee-track span{white-space:nowrap;font-size:15px;letter-spacing:.34em;color:var(--muted);padding-right:14px}

/* ============ 通用分节 ============ */
section{position:relative;padding:clamp(90px,12vw,150px) clamp(20px,5vw,64px)}
.wrap{max-width:1180px;margin:0 auto;position:relative;z-index:2}
.act-label{font-family:var(--mono);font-size:11px;letter-spacing:.5em;color:var(--blue);display:flex;align-items:center;gap:16px;margin-bottom:22px}
.act-label::before{content:"";width:52px;height:1px;background:var(--blue2)}
.act-label .cn{color:var(--faint);letter-spacing:.3em}
h2.sec-title{font-family:var(--serif);font-weight:900;font-size:clamp(30px,4.6vw,52px);line-height:1.3;letter-spacing:.02em}
.sec-title em{font-style:normal;color:var(--blue)}
.sec-title em.alt{color:var(--amber)}
#join .sec-title em{color:var(--amber)}
.sec-sub{margin-top:18px;max-width:660px;color:var(--muted);font-size:clamp(15px,1.6vw,17px);line-height:2}
.spot{position:absolute;top:-60px;left:50%;transform:translateX(-50%);width:min(760px,90vw);height:300px;background:radial-gradient(ellipse,rgba(14,165,233,.10),transparent 70%);pointer-events:none;z-index:0}

.reveal{opacity:0;transform:translateY(44px);transition:opacity .95s var(--ease),transform .95s var(--ease);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}
.reveal-left{opacity:0;transform:translateX(-56px);transition:opacity 1s var(--ease),transform 1s var(--ease);transition-delay:var(--d,0s)}
.reveal-left.in{opacity:1;transform:none}
.reveal-right{opacity:0;transform:translateX(56px);transition:opacity 1s var(--ease),transform 1s var(--ease);transition-delay:var(--d,0s)}
.reveal-right.in{opacity:1;transform:none}

/* ============ 序幕·关于 ============ */
#about{background:linear-gradient(180deg,var(--bg),var(--bg2))}
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,6vw,88px);align-items:start;margin-top:30px}
@media(max-width:860px){.about-grid{grid-template-columns:1fr}}
.about-quote{position:sticky;top:calc(var(--nav-h) + 40px)}
.about-quote .qmark{font-family:var(--serif);font-size:110px;line-height:.6;color:var(--blue2);opacity:.55;display:block;margin-bottom:26px}
.about-quote p{font-family:var(--serif);font-size:clamp(22px,2.8vw,31px);line-height:1.75;font-weight:700}
.about-quote p em{font-style:normal;color:var(--blue)}
.about-quote p em.alt{color:var(--amber)}
.about-quote .sign{margin-top:26px;font-family:var(--mono);font-size:11px;letter-spacing:.3em;color:var(--faint)}
.about-body p{color:var(--muted);margin-bottom:22px;font-size:15.5px;line-height:2.15}
.about-body p strong{color:var(--text);font-weight:600}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:56px}
@media(max-width:700px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{border:1px solid var(--line);border-radius:14px;padding:26px 18px;text-align:center;background:rgba(255,255,255,.02);transition:border-color .3s,transform .3s}
.stat:hover{border-color:var(--line2);transform:translateY(-4px)}
.stat .num{font-family:var(--latin);font-size:clamp(34px,4vw,48px);font-weight:700;color:var(--text);line-height:1}
.stat .num i{font-style:normal;color:var(--blue)}
.stat .lbl{margin-top:10px;font-size:12.5px;letter-spacing:.18em;color:var(--faint)}

/* ============ 第一幕·社群文化 ============ */
#culture{background:var(--bg)}
.culture-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,76px);margin-top:50px;align-items:center}
@media(max-width:900px){.culture-grid{grid-template-columns:1fr}}
.culture-cols{display:grid;grid-template-columns:1fr 1fr;gap:14px;position:relative}
.culture-cols figure{border-radius:10px;overflow:hidden;border:1px solid var(--line);position:relative}
.culture-cols figure img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease);animation:kenburns 30s ease-in-out infinite alternate}
.culture-cols figure:hover img{transform:scale(1.08)}
.culture-cols figure.a{aspect-ratio:4/5}
.culture-cols figure.b{aspect-ratio:4/5;margin-top:56px}
.culture-cols figure.c{aspect-ratio:4/5;margin-top:-40px}
.col-tag{position:absolute;left:12px;bottom:12px;z-index:2;font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:#fff;background:rgba(4,6,12,.6);backdrop-filter:blur(6px);padding:6px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.18)}
.column-card{border:1px solid var(--line);border-radius:16px;padding:30px 28px;background:linear-gradient(160deg,rgba(255,255,255,.03),rgba(255,255,255,.008));margin-bottom:20px;transition:border-color .35s,transform .35s}
.column-card:hover{border-color:var(--line2);transform:translateX(6px)}
.column-card h3{font-size:19px;letter-spacing:.06em;display:flex;align-items:center;gap:12px}
.column-card h3 .chip{font-family:var(--mono);font-size:10px;color:var(--deep);background:rgba(14,165,233,.12);border:1px solid rgba(14,165,233,.3);padding:3px 10px;border-radius:999px;letter-spacing:.14em}
.column-card p{margin-top:12px;color:var(--muted);font-size:14.5px;line-height:2}
.column-card .tags{margin-top:14px;display:flex;gap:8px;flex-wrap:wrap}
.column-card .tags span{font-size:12px;color:var(--faint);border:1px solid var(--line);padding:3px 12px;border-radius:999px;letter-spacing:.1em}
.timeline{margin-top:66px;position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,var(--blue2),var(--deep),transparent)}
.tl-item{position:relative;padding:0 0 34px}
.tl-item::before{content:"";position:absolute;left:-33px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--bg);border:2px solid var(--blue2);box-shadow:0 0 14px rgba(14,165,233,.5)}
.tl-item .tl-date{font-family:var(--mono);font-size:11px;letter-spacing:.3em;color:var(--blue)}
.tl-item h4{font-size:17px;margin:6px 0 6px;letter-spacing:.04em}
.tl-item p{color:var(--muted);font-size:14px;line-height:1.95;max-width:520px}

/* ============ 第二幕·课程体系 ============ */
#program{background:linear-gradient(180deg,var(--bg2),var(--bg))}
.courses{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:52px}
@media(max-width:860px){.courses{grid-template-columns:1fr}}
.course{border:1px solid var(--line);border-radius:20px;padding:40px 34px;position:relative;overflow:hidden;background:linear-gradient(165deg,rgba(14,165,233,.06),rgba(255,255,255,.015) 55%);transition:transform .4s var(--ease),border-color .4s,box-shadow .4s}
.course::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--blue2),transparent);opacity:.7}
.course:hover{transform:translateY(-8px);border-color:rgba(56,189,248,.4);box-shadow:0 24px 60px rgba(14,165,233,.12)}
.course .lv{font-family:var(--latin);font-size:80px;font-weight:700;line-height:1;background:linear-gradient(180deg,rgba(56,189,248,.5),rgba(56,189,248,.06));-webkit-background-clip:text;background-clip:text;color:transparent;position:absolute;right:22px;top:16px;pointer-events:none}
.course h3{font-family:var(--serif);font-size:26px;font-weight:900;letter-spacing:.05em}
.course .grade{margin-top:14px;display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--amber);border:1px solid rgba(242,192,99,.35);background:rgba(242,192,99,.07);padding:5px 16px;border-radius:999px}
.course .desc{margin-top:20px;color:var(--muted);font-size:14.5px;line-height:2.1;max-width:440px}
.course .cta-links{margin-top:28px;display:flex;gap:22px}
.course .cta-links a{font-size:14px;letter-spacing:.14em;color:var(--blue);border-bottom:1px solid rgba(56,189,248,.35);padding-bottom:3px;transition:border-color .3s,color .3s}
.course .cta-links a:hover{border-color:var(--blue);color:#fff}
.mechanism{margin-top:84px}
.mechanism-head{display:flex;align-items:baseline;gap:18px;flex-wrap:wrap;margin-bottom:44px}
.mechanism-head h3{font-family:var(--serif);font-size:clamp(22px,3vw,30px);font-weight:900}
.mechanism-head .en{font-family:var(--mono);font-size:10px;letter-spacing:.34em;color:var(--faint)}
.mech-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line)}
@media(max-width:760px){.mech-list{grid-template-columns:1fr}}
.mech{border-bottom:1px solid var(--line);padding:30px 22px 30px 0;display:grid;grid-template-columns:74px 1fr;gap:22px;align-items:start}
.mech:nth-child(odd){border-right:1px solid var(--line);padding-right:34px}
@media(max-width:760px){.mech:nth-child(odd){border-right:none}}
.mech .idx{font-family:var(--latin);font-size:44px;font-weight:700;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(56,189,248,.5)}
.mech h4{font-size:18px;letter-spacing:.04em;margin-bottom:10px;color:var(--blue)}
.mech p{color:var(--muted);font-size:14px;line-height:2.05}

/* ============ 第三幕·老师寄语 ============ */
#team{background:var(--bg)}
.teachers{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:54px}
@media(max-width:1000px){.teachers{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.teachers{grid-template-columns:1fr}}
.tcard{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.005));transition:transform .4s var(--ease),border-color .4s,box-shadow .4s;position:relative}
.tcard:hover{transform:translateY(-8px);border-color:rgba(56,189,248,.38);box-shadow:0 22px 54px rgba(14,165,233,.13)}
.tcard .photo{aspect-ratio:1/1;overflow:hidden;position:relative}
.tcard .photo img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease);filter:saturate(.85) contrast(1.05)}
.tcard:hover .photo img{transform:scale(1.1);filter:saturate(1.05)}
.tcard .photo::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(4,6,12,.82))}
.tcard .body{padding:20px 20px 26px}
.tcard .role{font-family:var(--mono);font-size:10px;letter-spacing:.26em;color:var(--blue);margin-bottom:8px}
.tcard h3{font-size:19px;letter-spacing:.05em}
.tcard .exp{margin-top:4px;font-size:12.5px;color:var(--faint);letter-spacing:.1em}
.tcard blockquote{margin-top:14px;color:var(--muted);font-size:13.5px;line-height:2;border-left:2px solid var(--line2);padding-left:14px}
.ethos{margin-top:72px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:760px){.ethos{grid-template-columns:1fr}}
.ethos .e{border:1px solid var(--line);border-radius:16px;padding:30px 26px;text-align:center;background:rgba(255,255,255,.02);position:relative;overflow:hidden;transition:border-color .3s,transform .3s}
.ethos .e:hover{border-color:var(--line2);transform:translateY(-4px)}
.ethos .e .n{font-family:var(--latin);font-size:15px;font-weight:700;color:var(--blue);letter-spacing:.2em;margin-bottom:12px}
.ethos .e p{color:var(--text);font-size:16px;letter-spacing:.08em}

/* ============ 大事记·胶片墙 ============ */
#events{background:linear-gradient(180deg,var(--bg),#05070f 60%,var(--bg))}
.strip-wrap{position:relative;margin-top:56px}
.strip-controls{display:flex;gap:12px;justify-content:flex-end;margin-bottom:26px}
.strip-btn{width:46px;height:46px;border-radius:50%;border:1px solid var(--line2);background:rgba(255,255,255,.02);color:var(--text);font-size:18px;cursor:pointer;transition:all .3s}
.strip-btn:hover{background:rgba(14,165,233,.15);border-color:var(--blue);transform:translateY(-2px)}
.strip{display:flex;gap:30px;overflow-x:auto;scroll-snap-type:x mandatory;padding:26px 4px 40px;scrollbar-width:thin;scrollbar-color:rgba(56,189,248,.4) transparent}
.strip::-webkit-scrollbar{height:5px}
.strip::-webkit-scrollbar-thumb{background:linear-gradient(90deg,var(--deep),var(--blue));border-radius:99px}
.strip::-webkit-scrollbar-track{background:rgba(140,175,230,.08)}
.slide{scroll-snap-align:center;flex:0 0 min(76vw,720px);position:relative;border-radius:6px;overflow:hidden;border:1px solid var(--line);background:#000;aspect-ratio:16/9}
.slide img{width:100%;height:100%;object-fit:cover;animation:kenburns 24s ease-in-out infinite alternate;filter:brightness(.92)}
.slide .perf{position:absolute;top:0;bottom:0;width:26px;pointer-events:none;z-index:2;background:repeating-linear-gradient(180deg,var(--bg) 0 8px,transparent 8px 20px);opacity:.5}
.slide .perf.l{left:0}.slide .perf.r{right:0}
.slide .cap{position:absolute;left:0;right:0;bottom:0;z-index:3;padding:60px 26px 22px;background:linear-gradient(180deg,transparent,rgba(3,5,10,.92));display:flex;align-items:flex-end;justify-content:space-between;gap:14px}
.slide .cap h3{font-family:var(--serif);font-size:clamp(17px,2vw,22px);font-weight:700;line-height:1.5}
.slide .cap .see{font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;color:var(--blue);white-space:nowrap;display:flex;align-items:center;gap:6px}
.slide .cap .year{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.26em;color:var(--amber);margin-bottom:6px}
.slide:hover img{filter:brightness(1);animation-play-state:paused}
.slide::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);border-radius:6px;pointer-events:none}

/* ============ 加入·三步 ============ */
#join{background:var(--bg2)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:56px;counter-reset:step}
@media(max-width:800px){.steps{grid-template-columns:1fr}}
.step{border:1px solid var(--line);border-radius:18px;padding:38px 30px;position:relative;background:linear-gradient(170deg,rgba(255,255,255,.03),rgba(255,255,255,.005));overflow:hidden;transition:transform .4s var(--ease),border-color .4s}
.step:hover{transform:translateY(-6px);border-color:rgba(56,189,248,.4)}
.step .big{font-family:var(--latin);font-size:64px;font-weight:700;line-height:1;background:linear-gradient(180deg,rgba(242,192,99,.55),rgba(242,192,99,.08));-webkit-background-clip:text;background-clip:text;color:transparent}
.step .arrow{position:absolute;top:50%;right:-20px;transform:translateY(-50%);color:var(--faint);font-size:22px;z-index:2;display:none}
@media(min-width:800px){.step:not(:last-child) .arrow{display:block}}
.step h3{font-size:20px;letter-spacing:.08em;margin-top:16px;color:var(--amber)}
.step p{margin-top:12px;color:var(--muted);font-size:14px;line-height:2.05}
.step .foot{margin-top:20px;font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--faint)}

/* ============ 尾声·行动 ============ */
#cta{position:relative;overflow:hidden;text-align:center;padding:clamp(120px,16vw,190px) 20px}
#cta .hero-bg{position:absolute;inset:0;z-index:0}
#cta .hero-bg img{width:100%;height:100%;object-fit:cover;animation:kenburns 30s ease-in-out infinite alternate}
#cta .hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,6,12,.9),rgba(4,6,12,.72) 50%,rgba(4,6,12,.94))}
.cta-inner{position:relative;z-index:2;max-width:820px;margin:0 auto}
.cta-inner .act-label{justify-content:center}
.cta-inner .act-label::before,.cta-inner .act-label::after{content:"";width:44px;height:1px;background:var(--blue2)}
.cta-inner .act-label::before{background:linear-gradient(90deg,transparent,var(--blue2))}
.cta-inner h2{font-family:var(--serif);font-weight:900;font-size:clamp(30px,5vw,56px);line-height:1.35;letter-spacing:.02em}
.cta-inner p{margin:26px auto 0;max-width:560px;color:var(--muted);font-size:16px;line-height:2.1}
.cta-inner .hero-cta{margin-top:44px}
.cta-inner .eq{margin-top:52px}

/* ============ 页脚 ============ */
footer{border-top:1px solid var(--line);padding:64px clamp(20px,5vw,64px) 40px;background:#03050a}
.foot-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
@media(max-width:800px){.foot-grid{grid-template-columns:1fr}}
.foot-brand img{width:180px;height:auto;margin-bottom:16px}
.foot-brand p{color:var(--muted);font-size:14px;max-width:300px;line-height:2}
/* 页脚二维码:学习小程序 / 视频号 / 小红书 / 抖音（2×2 网格，卡片数变化也不会掉单张） */
.foot-qr{display:grid;grid-template-columns:repeat(2,max-content);gap:18px 20px;margin-top:28px}
.qr-wrap{display:block;position:relative;width:106px}
.qr-card{display:block;width:106px;text-decoration:none;color:inherit}
.qr-card .qr-img{display:block;width:106px;height:106px;background:#fff;border-radius:12px;padding:8px;box-sizing:border-box;transition:transform .35s,box-shadow .35s}
.qr-card .qr-img img{display:block;width:100%;height:100%;object-fit:contain}
.qr-card:hover .qr-img{transform:translateY(-3px);box-shadow:0 10px 26px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.16)}
.qr-card .qr-name{display:block;font-size:12.5px;color:var(--text);margin-top:10px;letter-spacing:.12em;line-height:1.5}
.qr-card .qr-sub{display:block;font-size:10.5px;color:var(--faint);font-family:var(--mono);margin-top:3px;line-height:1.6;white-space:normal;word-break:break-word}
.qr-card.is-static{cursor:default}
.qr-card.is-static:hover .qr-img{transform:none;box-shadow:none}
.qr-empty{color:var(--faint);font-size:12px}
.foot-col h4{font-size:13px;letter-spacing:.22em;color:var(--text);margin-bottom:20px}
.foot-col a{display:block;color:var(--muted);font-size:13.5px;padding:6px 0;transition:color .3s,transform .3s}
.foot-col a:hover{color:var(--blue);transform:translateX(4px)}
.foot-bottom{max-width:1180px;margin:54px auto 0;padding-top:28px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--faint);font-size:12px;letter-spacing:.08em}
.foot-bottom .icp{font-family:var(--mono);font-size:11px;color:inherit;transition:color .3s}
.foot-bottom .icp:hover{color:var(--blue)}
.foot-bottom .admin-entry{font-family:var(--mono);font-size:11px;color:var(--faint);border:1px solid var(--line);border-radius:999px;padding:4px 14px;transition:all .3s}
.foot-bottom .admin-entry:hover{color:var(--blue);border-color:var(--line2)}

/* ============ 公众号文章 ============ */
#articles{background:linear-gradient(180deg,var(--bg),var(--bg2))}
.article-grid{display:grid;gap:18px;margin-top:52px}
.article{display:grid;grid-template-columns:250px 1fr;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:linear-gradient(160deg,rgba(255,255,255,.03),rgba(255,255,255,.008));transition:border-color .35s,transform .35s;position:relative}
.article:hover{border-color:rgba(56,189,248,.4);transform:translateX(6px)}
.article .cover{position:relative;overflow:hidden;min-height:150px}
.article .cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.article:hover .cover img{transform:scale(1.07)}
.article .info{padding:26px 30px;display:flex;flex-direction:column;justify-content:center;gap:8px}
.article .info .asrc{font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:var(--blue)}
.article .info h3{font-family:var(--serif);font-size:clamp(17px,1.8vw,20px);font-weight:700;line-height:1.55}
.article .info .ameta{color:var(--faint);font-size:12.5px;letter-spacing:.06em}
.article .info .ago{margin-top:6px;font-size:13.5px;letter-spacing:.12em;color:var(--blue)}
@media(max-width:700px){.article{grid-template-columns:1fr}.article .cover{aspect-ratio:16/9;min-height:0}}
.articles-follow{margin-top:30px;text-align:center;color:var(--muted);font-size:14px;letter-spacing:.14em}

/* ============ 最新活动 ============ */
#latest{background:var(--bg2)}
.latest-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:52px}
@media(max-width:820px){.latest-grid{grid-template-columns:1fr}}
.lcard{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.005));transition:transform .4s var(--ease),border-color .4s,box-shadow .4s;position:relative}
.lcard:hover{transform:translateY(-7px);border-color:rgba(242,192,99,.4);box-shadow:0 22px 54px rgba(242,192,99,.08)}
.lcard .photo{aspect-ratio:16/8;overflow:hidden;position:relative}
.lcard .photo img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease);filter:brightness(.94)}
.lcard:hover .photo img{transform:scale(1.08);filter:brightness(1)}
.lcard .date-badge{position:absolute;top:14px;left:14px;z-index:3;background:rgba(4,6,12,.8);backdrop-filter:blur(6px);border:1px solid rgba(242,192,99,.4);color:var(--amber);font-family:var(--mono);font-size:11px;letter-spacing:.14em;padding:6px 14px;border-radius:999px}
.lcard .body{padding:22px 24px 26px}
.lcard h3{font-family:var(--serif);font-size:21px;font-weight:900;margin-bottom:6px;line-height:1.45}
.lcard .place{color:var(--blue);font-size:13px;letter-spacing:.06em;margin-bottom:10px}
.lcard p{color:var(--muted);font-size:14px;line-height:1.95}

/* ============ 板块管理 ============ */
.modal-card.wide{width:min(600px,94vw)}
.layout-list{max-height:46vh;overflow-y:auto;display:flex;flex-direction:column;gap:8px;margin-bottom:20px;padding-right:6px}
.layout-row{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:12px;padding:10px 14px;background:rgba(255,255,255,.02)}
.layout-row .lname{flex:1;font-size:14px;letter-spacing:.06em;color:var(--text)}
.layout-row .ltype{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;color:var(--faint);border:1px solid var(--line);padding:2px 8px;border-radius:999px;white-space:nowrap}
.layout-row.off .lname{color:var(--faint);text-decoration:line-through}
.layout-row button{width:30px;height:30px;border-radius:8px;border:1px solid var(--line2);background:transparent;color:var(--text);font-size:13px;cursor:pointer;transition:all .2s;font-family:var(--sans);line-height:1}
.layout-row button:hover{border-color:var(--blue);background:rgba(14,165,233,.15)}
.layout-row button.eye-on{color:var(--blue);border-color:rgba(56,189,248,.5)}
.layout-row button.eye-off{color:var(--faint)}
.layout-row button[disabled]{opacity:.3;cursor:not-allowed}
.layout-hint{margin-bottom:16px;font-size:12.5px;color:var(--faint);line-height:1.9}
.cfield{display:block;margin-bottom:14px}
.cfield span{display:block;font-size:12px;letter-spacing:.14em;color:var(--faint);margin-bottom:6px}
.cfield input,.cfield textarea{width:100%;padding:11px 14px;border-radius:10px;border:1px solid var(--line2);background:rgba(255,255,255,.04);color:var(--text);font-size:14px;outline:none;font-family:var(--sans);resize:vertical}
.cfield input:focus,.cfield textarea:focus{border-color:var(--blue)}
.empty-note{color:var(--faint);text-align:center;padding:44px 0;font-size:14px;letter-spacing:.2em;border:1px dashed var(--line2);border-radius:14px}
/* 列表项定位(供编辑控制按钮锚定) */
.column-card,.tl-item,.mech,.step,.stat,.ethos .e,.course,.foot-col a{position:relative}
/* 板块级"添加组件"入口 */
.sec-add{display:none;margin:0 0 18px;padding:12px;border:1.5px dashed var(--line2);border-radius:12px;color:var(--faint);background:rgba(14,165,233,.03);font-size:13px;letter-spacing:.15em;text-align:center;cursor:pointer;font-family:var(--sans);transition:all .25s}
body.edit-mode .sec-add{display:block}
.sec-add:hover{border-color:var(--blue);color:var(--blue);background:rgba(14,165,233,.08)}
.culture-cols figure{position:relative}
/* 文字块删除按钮(编辑模式悬停显示) */
body.edit-mode [data-edit]{position:relative}
.del-text-btn{position:absolute;top:2px;right:2px;z-index:12;width:24px;height:24px;border-radius:6px;border:1px solid var(--line2);background:rgba(15,23,42,.85);color:#f87171;font-size:13px;line-height:1;cursor:pointer;opacity:0;transition:opacity .18s;font-family:var(--sans)}
body.edit-mode [data-edit]:hover .del-text-btn{opacity:1}
.del-text-btn:hover{background:#dc2626;color:#fff;border-color:#dc2626}
/* 已隐藏文字块的恢复占位 */
.del-restore{display:inline-block;padding:6px 14px;border:1.5px dashed var(--line2);border-radius:8px;color:var(--faint);font-size:12px;letter-spacing:.08em;cursor:pointer;background:rgba(14,165,233,.04);font-family:var(--sans)}
.del-restore:hover{border-color:var(--blue);color:var(--blue);background:rgba(14,165,233,.08)}
/* 组件库 */
.lib-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-height:46vh;overflow-y:auto;margin-bottom:20px;padding-right:4px}
@media(max-width:640px){.lib-grid{grid-template-columns:repeat(2,1fr)}}
.lib-card{border:1px solid var(--line);border-radius:12px;padding:16px 14px;cursor:pointer;background:rgba(255,255,255,.02);transition:all .25s;text-align:left;font-family:var(--sans)}
.lib-card:hover{border-color:var(--blue);background:rgba(14,165,233,.08);transform:translateY(-2px)}
.lib-card .li{font-size:20px;line-height:1}
.lib-card .lt{font-size:13.5px;letter-spacing:.06em;margin-top:7px;color:var(--text)}
.lib-card .ld{font-size:11.5px;color:var(--faint);margin-top:3px;line-height:1.6}
.add-btn{border-style:dashed;opacity:.75}
/* 兜底: 「＋ 添加XX」是纯编辑态按钮,非编辑视图一律隐形 —— 即便某条重渲染路径漏了,
   也不能让编辑态产物出现在访客眼前(子页 .pg-empty{display:none} 是同一套写法) */
body:not(.edit-mode) .add-btn{display:none}
.hero-cta .btn{position:relative}
.btn-wrap{position:relative;display:inline-block}
/* 自定义确认/输入弹窗 */
.modal-card.small{width:min(420px,92vw)}
.modal-msg{margin:14px 0 20px;color:var(--muted);font-size:14px;line-height:1.9;white-space:pre-line}

/* ============ 管理员系统 ============ */
.dock{position:fixed;right:20px;bottom:20px;z-index:150;display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;max-width:min(92vw,520px)}
.dock button{font-family:var(--sans);font-size:12.5px;letter-spacing:.06em;padding:9px 16px;border-radius:999px;border:1px solid var(--line2);background:rgba(8,13,24,.85);backdrop-filter:blur(10px);color:var(--text);cursor:pointer;transition:all .25s;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.dock button:hover{border-color:var(--blue);background:rgba(14,165,233,.15);transform:translateY(-2px)}
.dock button.dock-save{border-color:var(--blue2);background:linear-gradient(135deg,var(--blue2),var(--deep));color:#fff}
.dock button.dock-edit-on{border-color:var(--amber);color:var(--amber)}
.modal{position:fixed;inset:0;z-index:180;display:flex;align-items:center;justify-content:center;background:rgba(3,5,10,.72);backdrop-filter:blur(6px)}
.modal-card{width:min(420px,92vw);background:linear-gradient(170deg,#0e1628,#0a101d);border:1px solid var(--line2);border-radius:18px;padding:34px 30px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.modal-card h3{font-family:var(--serif);font-size:22px;font-weight:900;letter-spacing:.06em}
.modal-card .modal-sub{margin:8px 0 22px;font-family:var(--mono);font-size:10.5px;letter-spacing:.24em;color:var(--faint)}
.modal-card input{width:100%;padding:12px 16px;border-radius:10px;border:1px solid var(--line2);background:rgba(255,255,255,.04);color:var(--text);font-size:14.5px;outline:none;margin-bottom:12px;font-family:var(--sans)}
.modal-card input:focus{border-color:var(--blue)}
.modal-err{min-height:20px;font-size:12.5px;color:#f87171;margin-bottom:10px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end}
.mbtn{padding:10px 24px;border-radius:999px;font-size:13.5px;letter-spacing:.1em;cursor:pointer;border:1px solid var(--line2);background:transparent;color:var(--text);transition:all .25s;font-family:var(--sans)}
.mbtn.primary{background:linear-gradient(135deg,var(--blue2),var(--deep));border-color:transparent;color:#fff}
.mbtn:hover{transform:translateY(-1px)}
.toast{position:fixed;left:50%;bottom:88px;transform:translateX(-50%);z-index:190;background:rgba(10,16,29,.95);border:1px solid var(--blue2);color:var(--text);font-size:13.5px;letter-spacing:.06em;padding:11px 26px;border-radius:999px;box-shadow:0 10px 34px rgba(0,0,0,.5);transition:opacity .3s;pointer-events:none}
.hidden{display:none!important}
/* 编辑模式 */
body.edit-mode [data-edit]{outline:1px dashed rgba(56,189,248,.5);outline-offset:3px;border-radius:4px;cursor:text;transition:background .2s}
body.edit-mode [data-edit]:hover{background:rgba(56,189,248,.06)}
body.edit-mode [data-edit]:focus{outline:2px solid var(--blue);background:rgba(56,189,248,.08)}
body.edit-mode [data-edit]{white-space:pre-wrap}
body.edit-mode .edit-hint{display:block}
.edit-hint{display:none;position:fixed;left:50%;top:88px;transform:translateX(-50%);z-index:140;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--amber);background:rgba(8,13,24,.9);border:1px solid rgba(242,192,99,.35);padding:8px 22px;border-radius:999px;pointer-events:none;white-space:nowrap}
.img-edit-btn{display:none;position:absolute;right:10px;bottom:10px;z-index:40;font-size:11.5px;letter-spacing:.1em;padding:6px 14px;border-radius:999px;border:1px solid var(--blue2);background:rgba(8,13,24,.88);color:var(--blue);cursor:pointer;font-family:var(--sans);transition:all .25s}
.img-edit-btn:hover{background:var(--blue2);color:#fff}
body.edit-mode .img-edit-btn{display:block}
.sctl{position:absolute;top:10px;right:10px;z-index:40;display:flex;gap:6px;display:none}
body.edit-mode .sctl{display:flex}
.sctl button{width:30px;height:30px;border-radius:8px;border:1px solid var(--line2);background:rgba(8,13,24,.88);color:var(--text);font-size:13px;cursor:pointer;transition:all .2s;font-family:var(--sans);line-height:1}
.sctl button:hover{border-color:var(--blue);background:rgba(14,165,233,.2)}
.sctl button[data-a="del"]:hover{border-color:#f87171;background:rgba(248,113,113,.2)}
.sctl button[data-a="img"]{color:var(--blue)}

/* ============ 减少动效偏好 ============ */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal,.reveal-left,.reveal-right,.hero-title .line span,.hero-slogan,.hero-cta,.eq,.scroll-hint{opacity:1!important;transform:none!important}
}
/* 编辑模式:重渲染的卡片不再等入场动画,直接可见(修复"板块消失") */
body.edit-mode .reveal,body.edit-mode .reveal-left,body.edit-mode .reveal-right{opacity:1!important;transform:none!important;transition:none!important}

/* 导航项:可增删改换序(编辑态样式) */
.navi{position:relative;display:inline-flex;align-items:center;gap:6px}
body.edit-mode .navi .sctl{top:calc(100% + 2px);right:0;left:auto}