/* ====================================================================
   青科山海志 · QUST GUIDE — 设计系统 v2
   概念：海边大学的独立杂志。天蓝纸底 + 深海蓝 + 日落珊瑚 / 海玻璃青 / 沙金 / 松绿
   字体：Geist / Geist Mono（拉丁与数字）+ Noto Sans SC（中文），非阻塞加载
   ==================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0E2A44;          /* 深海蓝（文字与深色块） */
  --ink-2:#1B3D5F;
  --ink-3:#2A5579;
  --sky:#1387C0;          /* 晴空海蓝 */
  --sky-l:#6FC3E8;        /* 浅海蓝 */
  --sky-d:#0E6A9E;        /* 深海蓝 */
  --paper:#FAEDD1;        /* 奶油米白 */
  --paper-2:#F2E0BD;
  --surface:#FDF7EA;
  --surface-2:#F8EED8;
  --line:rgba(14,42,68,.14);
  --line-soft:rgba(14,42,68,.08);
  --line-ink:rgba(234,244,251,.18);
  --muted:#5A7186;
  --muted-2:#8BA3B8;
  --coral:#F4520D; /* 暖橙光 */
  --cyan:#25A8B5;
  --amber:#E0A32E;
  --pine:#3E7A5C;

  --font-sans:"Geist","Noto Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"Geist Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;

  --fs-display:clamp(3.1rem,7.2vw,7.4rem);
  --fs-h1:clamp(2.2rem,4.6vw,4.4rem);
  --fs-h2:clamp(1.7rem,3.2vw,2.9rem);
  --fs-lead:clamp(1.05rem,1.4vw,1.25rem);

  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:72px;
  --r-sm:2px; --r:4px; --r-lg:8px;

  --sh-1:0 1px 2px rgba(14,42,68,.06);
  --sh-2:0 12px 32px rgba(14,42,68,.10);
  --sh-3:0 24px 64px rgba(14,42,68,.16);

  --ease:cubic-bezier(.25,1,.5,1);
  --ease-in:cubic-bezier(.16,1,.3,1);
  --nav-h:68px;
}

/* ---------- 2. 重置与全局 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scrollbar-color:var(--sky) var(--paper-2)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--paper-2)}
::-webkit-scrollbar-thumb{background:var(--sky);border-radius:99px;border:2px solid var(--paper-2)}
::-webkit-scrollbar-thumb:hover{background:var(--sky-d)}
input,textarea{caret-color:var(--sky-d)}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::after{ /* 颗粒噪点 */
  content:"";position:fixed;inset:0;z-index:2147483000;pointer-events:none;
  opacity:.05;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
::selection{background:rgba(19,135,192,.28)}
:focus-visible{outline:2px solid var(--sky);outline-offset:3px;border-radius:var(--r-sm)}
h1,h2,h3,h4{line-height:1.18;text-wrap:balance;font-weight:650}
[data-split],.hero-title{text-wrap:auto}
p{text-wrap:pretty}
.num{font-family:var(--font-mono);font-feature-settings:"tnum" 1;font-variant-numeric:tabular-nums;letter-spacing:-.02em}

.wrap{max-width:1200px;margin:0 auto;padding:0 var(--sp-5)}
.wrap-wide{max-width:1400px;margin:0 auto;padding:0 var(--sp-5)}

/* 章节节奏：电影式分章 */
.sec{padding:var(--sp-8) 0}
@media(max-width:960px){.sec{padding:var(--sp-7) 0}}

/* ---------- 3. 排版构件 ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted);
}
.kicker::before{content:"";width:34px;height:1px;background:var(--sky)}
.kicker.on-dark{color:rgba(234,244,251,.6)}
.kicker.on-dark::before{background:rgba(234,244,251,.5)}

.disp{
  font-size:var(--fs-display);font-weight:700;letter-spacing:-.035em;
  line-height:1.02;margin:var(--sp-4) 0 0;
}
.h1{font-size:var(--fs-h1);font-weight:700;letter-spacing:-.028em;line-height:1.08;margin:0}
.h2{font-size:var(--fs-h2);font-weight:700;letter-spacing:-.02em;line-height:1.12;margin:0}
.lead{font-size:var(--fs-lead);color:var(--muted);line-height:1.8}
.ghost-num{ /* 描边大字数字，杂志式 */
  font-family:var(--font-mono);font-weight:700;font-size:clamp(4rem,10vw,9rem);
  line-height:.9;letter-spacing:-.04em;color:transparent;
  -webkit-text-stroke:1.5px rgba(19,135,192,.45);
  user-select:none;
}
.ghost-num.on-dark{-webkit-text-stroke:1.5px rgba(234,244,251,.4)}

/* ---------- 4. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 26px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:.92rem;font-weight:600;letter-spacing:.02em;line-height:1;
  transition:transform .5s var(--ease),background-color .3s,border-color .3s,color .3s;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn .arr{font-family:var(--font-mono);transition:transform .5s var(--ease)}
.btn:hover .arr{transform:translateX(5px)}
.btn-primary{background:var(--sky-d);color:#fff;border-color:var(--sky-d)}
.btn-primary:hover{background:var(--ink);border-color:var(--ink);transform:translateY(-2px)}
.btn-coral{background:var(--coral);color:#fff}
.btn-coral:hover{background:var(--ink)}
.btn-paper{background:#fff;color:var(--ink);border-color:rgba(234,244,251,.5)}
.btn-paper:hover{background:#fff;transform:translateY(-2px)}
.btn-ink{background:var(--sky-d);color:#fff;border-color:var(--sky-d)}
.btn-ink:hover{background:var(--sky-d);border-color:var(--sky-d);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn-lg{padding:18px 40px;font-size:1rem}
.btn-sm{padding:9px 18px;font-size:.85rem}

/* ---------- 5. 导航 ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:900;height:var(--nav-h);
  transition:background-color .4s,box-shadow .4s,border-color .4s,transform .5s var(--ease);
  border-bottom:1px solid transparent;
}
.site-nav.scrolled{
  background:rgba(234,244,251,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line-soft);box-shadow:0 1px 0 rgba(14,42,68,.03);
}
.nav-inner{
  max-width:1400px;margin:0 auto;height:100%;padding:0 var(--sp-5);
  display:flex;align-items:center;gap:var(--sp-5);
}
.nav-brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:auto;height:34px;border-radius:var(--r-sm);
  display:grid;place-items:center;flex-shrink:0;overflow:hidden;
}
.brand-mark svg{width:18px;height:18px}
.brand-logo{height:27px;width:auto;display:block}
.brand-mark.mark-fallback{width:34px;background:var(--sky-d);color:#fff}
.brand-name{font-weight:700;letter-spacing:.01em;font-size:1.02rem;line-height:1.1}
.brand-name small{display:block;font-family:var(--font-mono);font-size:.62rem;letter-spacing:.28em;color:var(--muted);font-weight:500}
.nav-links{
  display:flex;gap:2px;margin-left:auto;
}
.nav-links a{
  padding:9px 14px;font-size:.92rem;font-weight:500;color:var(--ink-2);
  border-radius:var(--r-sm);position:relative;
  transition:background-color .3s,color .3s;
}
.nav-links a:hover{background:rgba(14,42,68,.05)}
.nav-links a.active{color:var(--sky);font-weight:650}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;background:var(--sky);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:var(--sp-3)}
.nav-burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:transparent;border-radius:var(--r-sm);
  flex-direction:column;gap:5px;align-items:center;justify-content:center;
}
.nav-burger span{width:18px;height:1.5px;background:var(--ink);transition:transform .3s,opacity .3s}
body.nav-open .nav-burger span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
body.nav-open .nav-burger span:nth-child(2){opacity:0}
body.nav-open .nav-burger span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.mobile-drawer{
  display:none;position:fixed;top:var(--nav-h);left:0;right:0;z-index:890;
  background:var(--paper);border-bottom:1px solid var(--line);
  padding:var(--sp-5);flex-direction:column;gap:4px;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:transform .4s var(--ease),opacity .3s;
}
body.nav-open .mobile-drawer{transform:none;opacity:1;pointer-events:auto}
.mobile-drawer a{padding:14px 6px;font-size:1.05rem;font-weight:600;border-bottom:1px solid var(--line-soft)}
.mobile-drawer a.active{color:var(--coral)}

/* 首页导航浮于天蓝 Hero 之上（未滚动时白字） */
body[data-page="index"] .site-nav:not(.scrolled) .nav-links a{color:rgba(255,255,255,.92)}
body[data-page="index"] .site-nav:not(.scrolled) .nav-links a:hover{background:rgba(255,255,255,.12);color:#fff}
body[data-page="index"] .site-nav:not(.scrolled) .brand-name{color:#fff}
body[data-page="index"] .site-nav:not(.scrolled) .brand-name small{color:rgba(255,255,255,.62)}
body[data-page="index"] .site-nav:not(.scrolled) .nav-burger{border-color:rgba(255,255,255,.55)}
body[data-page="index"] .site-nav:not(.scrolled) .nav-burger span{background:#fff}

/* ---------- 6. 首页 Hero（Artistic Asymmetry） ---------- */
.hero{
  position:relative;padding:calc(var(--nav-h) + var(--sp-8)) 0 var(--sp-8);
  overflow:hidden;min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  background:linear-gradient(163deg,var(--sky-d) 0%,var(--sky) 52%,var(--sky-l) 112%);
}
.hero-wash{ /* 天蓝上的光晕 */
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(60% 50% at 82% 22%, rgba(255,255,255,.18), transparent 62%),
    radial-gradient(46% 42% at 8% 88%, rgba(127,196,240,.3), transparent 60%),
    radial-gradient(70% 60% at 50% 110%, rgba(14,42,68,.16), transparent 70%);
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:88px 88px;
  -webkit-mask-image:radial-gradient(75% 70% at 50% 35%,#000 20%,transparent 100%);
  mask-image:radial-gradient(75% 70% at 50% 35%,#000 20%,transparent 100%);
}
.hero-inner{position:relative;width:100%;display:grid;grid-template-columns:minmax(0,58%) minmax(0,42%);align-items:center;gap:var(--sp-7)}
.hero-copy{position:relative;z-index:2;padding-left:calc((100vw - 1400px)/2 + 24px);max-width:860px}
@media(max-width:1500px){.hero-copy{padding-left:var(--sp-5)}}
.hero-title{
  font-size:clamp(2.6rem,5.2vw,5.2rem); /* 宽容器 + 克制字号 => 固定两行，行距舒展 */
  font-weight:700;letter-spacing:-.01em;line-height:1.18;margin:var(--sp-5) 0 0;
  max-width:960px;
}
.hero-title{color:#fff}
.hero-kicker{color:rgba(255,255,255,.78)}
.hero-kicker::before{background:rgba(255,255,255,.55)}
.hero-title .line + .line{margin-top:.14em}
.hero-title .hl{color:var(--coral)}
.hero-title .hl-cyan{color:var(--cyan)}
.hero-title em{font-style:normal;position:relative;white-space:nowrap}
.hero-title em:empty{display:none} /* SplitText 跨行复制产生的空壳不渲染下划线 */
.hero-title em::after{
  content:"";position:absolute;left:-2%;right:-2%;bottom:.08em;height:.16em;
  background:var(--amber);z-index:-1;transform:rotate(-1.2deg);border-radius:2px;
}
.hero-lead{margin:var(--sp-5) 0 0;font-size:var(--fs-lead);color:rgba(255,255,255,.85);max-width:520px}
.hero-ctas{display:flex;gap:var(--sp-4);margin-top:var(--sp-6);flex-wrap:wrap}
.hero-ctas .btn-primary{background:#fff;color:var(--sky-d);border-color:#fff}
.hero-ctas .btn-primary:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px)}
.hero-foot{
  margin-top:var(--sp-7);display:flex;align-items:center;gap:var(--sp-5);flex-wrap:wrap;
}
.hero-coord{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;color:rgba(255,255,255,.62);text-transform:uppercase}
.hero-partner{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.8rem;font-weight:600;color:#fff;letter-spacing:.02em;
  border-right:1px solid rgba(255,255,255,.35);padding-right:var(--sp-5);
}
.hero-partner img{height:24px;width:auto}
.about-logo{height:48px;width:auto;margin-bottom:var(--sp-4);display:block;border-radius:2px}
.cta-logo{height:54px;width:auto;margin:0 auto var(--sp-4);display:block;filter:drop-shadow(0 3px 14px rgba(0,0,0,.4))}
.hero-art{position:relative;z-index:1;height:min(66vh,640px)}
.hero-img-main{
  position:absolute;right:-6%;top:6%;width:min(78%,460px);aspect-ratio:3/4.2;overflow:hidden;
  border-radius:var(--r-lg);box-shadow:var(--sh-3);
  clip-path:inset(0 0 100% 0); /* 由 GSAP 揭开 */
}
.hero-img-main img{width:100%;height:100%;object-fit:cover;filter:contrast(1.06) saturate(.92)}
.hero-img-main::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,transparent 55%,rgba(14,42,68,.28))}
.hero-img-float{
  position:absolute;left:0;bottom:4%;width:min(44%,260px);aspect-ratio:1;overflow:hidden;
  border-radius:50%;border:6px solid rgba(255,255,255,.9);box-shadow:var(--sh-2);
}
.hero-img-float img{width:100%;height:100%;object-fit:cover;filter:saturate(1.05)}
.hero-img-tag{
  position:absolute;right:2%;bottom:-12px;background:#fff;color:var(--sky-d);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;
  padding:8px 14px;border-radius:var(--r-sm);box-shadow:var(--sh-2);
}
.hero-scroll{
  position:absolute;left:calc((100vw - 1400px)/2 + 24px);bottom:36px;z-index:3;
  display:flex;align-items:center;gap:12px;color:rgba(255,255,255,.7);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;
}
@media(max-width:1500px){.hero-scroll{left:var(--sp-5)}}
.hero-scroll i{display:block;width:1px;height:44px;background:linear-gradient(#fff,transparent);animation:scrollPulse 2.2s var(--ease) infinite;transform-origin:top}
@keyframes scrollPulse{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- 7. 章节头 ---------- */
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,380px);gap:var(--sp-6);align-items:end;margin-bottom:var(--sp-7)}
.sec-head .h2{margin-top:var(--sp-4)}
.sec-head .lead{margin:0 0 4px}
.sec-head .right{justify-self:end;text-align:right}
.link-line{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.95rem;
  border-bottom:1px solid var(--sky-d);padding-bottom:4px;color:var(--sky-d);
}
.link-line .arr{font-family:var(--font-mono);transition:transform .5s var(--ease)}
.link-line:hover .arr{transform:translateX(6px)}

/* ---------- 8. 无缝 Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-flow:dense;gap:var(--sp-4)}
.bento-cell{
  position:relative;background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:var(--sp-6);overflow:hidden;display:flex;flex-direction:column;min-height:220px;
  transition:transform .6s var(--ease),box-shadow .6s,border-color .4s;
}
.bento-cell:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(19,135,192,.45)}
.bento-cell .cell-num{
  position:absolute;top:var(--sp-5);right:var(--sp-6);font-family:var(--font-mono);
  font-size:.8rem;color:var(--muted-2);letter-spacing:.12em;
}
.bento-cell.dark{background:linear-gradient(150deg,var(--sky-d),var(--sky));color:#fff;border-color:var(--sky-d)}
.bento-cell.dark .kicker{color:rgba(234,244,251,.55)}
.bento-cell.dark .kicker::before{background:rgba(234,244,251,.5)}
.bento-cell.dark .muted{color:rgba(255,255,255,.72)}
.bento-cell.dark .stat .l{color:rgba(255,255,255,.72)}
.bento-cell.dark .stat .v .unit{color:rgba(255,255,255,.55)}
.cell-media{position:absolute;inset:0;border-radius:var(--r-lg);overflow:hidden}
.cell-media img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease);filter:saturate(.95) contrast(1.04)}
.bento-cell:hover .cell-media img{transform:scale(1.06)}
.cell-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,42,68,.05) 30%,rgba(14,42,68,.55))}
.cell-inkwash::after{background:linear-gradient(195deg,rgba(14,42,68,.35),rgba(14,42,68,.66))}
.bento-cell.media-cell{padding:0;justify-content:flex-end;min-height:300px}
.bento-cell.media-cell .cell-inner{position:relative;z-index:2;padding:var(--sp-6)}
.bento-cell .h3{font-size:1.5rem;font-weight:700;letter-spacing:-.02em;margin:var(--sp-4) 0 var(--sp-3);line-height:1.2}
.bento-cell .muted{color:var(--muted);font-size:.95rem;line-height:1.7;margin:0}
.cell-foot{margin-top:auto;padding-top:var(--sp-5)}
.stat-row{display:flex;gap:var(--sp-6);margin-top:var(--sp-5)}
.stat .v{font-family:var(--font-mono);font-size:2.2rem;font-weight:700;letter-spacing:-.03em;line-height:1}
.stat .v .unit{font-size:1rem;color:var(--muted-2);margin-left:2px}
.stat .l{font-size:.8rem;color:var(--muted);margin-top:6px;letter-spacing:.04em}
.cover-fallback{ /* 无图时的色块封面 */
  position:absolute;inset:0;border-radius:var(--r-lg);
  background:radial-gradient(90% 90% at 20% 15%,var(--acc,var(--coral)),transparent 55%),var(--ink);
  opacity:.9;
}
.bento .span-7{grid-column:span 7}.bento .span-5{grid-column:span 5}
.bento .span-8{grid-column:span 8}.bento .span-4{grid-column:span 4}
.bento .span-6{grid-column:span 6}.bento .span-12{grid-column:span 12}
.bento .row-2{grid-row:span 2}

/* ---------- 9. 钉住分栏（GSAP Split Pin） ---------- */
.split-pin{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:var(--sp-7)}
.pin-col{position:relative} /* 网格项默认撑满整行，给内层 sticky 提供完整高度 */
.pin-col-inner{position:sticky;top:calc(var(--nav-h) + 10px)} /* 始终紧挨顶部（导航栏下） */
.pin-drift{will-change:transform}
.pin-title{font-size:clamp(2rem,3.6vw,3.4rem);font-weight:700;letter-spacing:-.03em;line-height:1.1;margin:var(--sp-4) 0 0}
.pin-col .lead{margin-top:var(--sp-5)}
.pin-progress{width:100%;height:2px;background:var(--line);margin-top:var(--sp-5);overflow:hidden}
.pin-progress i{display:block;height:100%;width:100%;background:var(--sky);transform:scaleX(0);transform-origin:left}
.gallery-col{columns:2;column-gap:var(--sp-4)}
.gallery-item{
  display:flex;flex-direction:column;break-inside:avoid;margin-bottom:var(--sp-4);
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  overflow:hidden;transition:border-color .4s;
}
.gallery-item:hover{border-color:rgba(19,135,192,.45)}
.gallery-media{position:relative;overflow:hidden;aspect-ratio:4/3;flex-shrink:0}
.gallery-item:nth-child(3n) .gallery-media{aspect-ratio:4/5}
.gallery-item:nth-child(4n) .gallery-media{aspect-ratio:16/10}
.gallery-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.95);transition:transform 1.1s var(--ease)}
.gallery-item:hover .gallery-media img{transform:scale(1.07)}
.gallery-media .fallback{position:absolute;inset:0;background:radial-gradient(80% 80% at 30% 20%,var(--acc,var(--cyan)),transparent 60%),var(--ink-2)}
.gallery-body{padding:var(--sp-4) var(--sp-5) var(--sp-5)}
.gallery-body .g-cat{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--acc,var(--cyan))}
.gallery-body h3{margin:8px 0 6px;font-size:1.22rem;font-weight:700;letter-spacing:-.01em}
.gallery-body p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.7}
.gallery-body .g-meta{margin-top:12px;display:flex;gap:14px;font-family:var(--font-mono);font-size:.74rem;color:var(--muted-2)}

/* ---------- 10. 卡片堆叠（Card Stacking） ---------- */
.stack-sec{position:relative}
.stack-item{position:sticky;top:calc(var(--nav-h) + 24px);margin-bottom:var(--sp-5)}
.stack-card{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:var(--sp-6) var(--sp-7);display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,300px);
  gap:var(--sp-6);align-items:center;box-shadow:var(--sh-2);overflow:hidden;position:relative;
}
.stack-card .stack-idx{
  position:absolute;top:-14px;right:var(--sp-5);font-family:var(--font-mono);font-weight:700;
  font-size:7rem;color:transparent;-webkit-text-stroke:1px rgba(14,42,68,.14);line-height:1;user-select:none;
}
.stack-card h3{font-size:clamp(1.3rem,2.2vw,1.9rem);font-weight:700;letter-spacing:-.02em;margin:0 0 var(--sp-3)}
.stack-card .stack-meta{display:flex;gap:16px;flex-wrap:wrap;font-family:var(--font-mono);font-size:.76rem;color:var(--muted-2);margin-bottom:var(--sp-3)}
.stack-card p{margin:0;color:var(--muted);font-size:.96rem}
.stack-media{border-radius:var(--r);overflow:hidden;aspect-ratio:16/11;position:relative}
.stack-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.95)}
.stack-media .fallback{position:absolute;inset:0;background:radial-gradient(80% 80% at 30% 20%,var(--acc,var(--coral)),transparent 60%),var(--ink-2)}

/* ---------- 11. 行内图打字（Inline Typography Images） ---------- */
.type-inline{font-size:clamp(2rem,4.4vw,3.9rem);font-weight:700;letter-spacing:-.03em;line-height:1.3}
.type-inline .t-img{
  display:inline-block;width:clamp(64px,8vw,120px);height:clamp(30px,3.6vw,54px);
  border-radius:999px;background-size:cover;background-position:center;
  vertical-align:middle;margin:0 .12em;border:1px solid var(--line-soft);
  transform:scale(.5);opacity:0; /* GSAP 揭示 */
}
.type-inline .t-img.bg-1{background-color:var(--coral)}
.type-inline .t-img.bg-2{background-color:var(--cyan)}
.type-inline .t-img.bg-3{background-color:var(--amber)}
.type-inline .t-line{display:block}

/* ---------- 12. 横向手风琴（Horizontal Accordions） ---------- */
.h-acc{display:flex;gap:var(--sp-3);height:460px}
.h-acc-item{
  position:relative;flex:1;overflow:hidden;border-radius:var(--r-lg);cursor:pointer;
  background:var(--surface);border:1px solid var(--line-soft);
  transition:flex .8s var(--ease);display:flex;align-items:flex-end;
}
.h-acc-item.open{flex:4.2}
.h-acc-item .acc-num{
  position:absolute;top:var(--sp-4);left:var(--sp-5);font-family:var(--font-mono);
  font-size:.8rem;letter-spacing:.16em;color:var(--muted);z-index:2;
}
.h-acc-item .acc-bg{position:absolute;inset:0;opacity:0;transition:opacity .7s}
.h-acc-item .acc-bg img{width:100%;height:100%;object-fit:cover;filter:saturate(.9)}
.h-acc-item .acc-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(14,42,68,.08),rgba(14,42,68,.62))}
.h-acc-item.open .acc-bg{opacity:1}
.h-acc-item .acc-bg .fallback{position:absolute;inset:0;background:radial-gradient(80% 80% at 25% 20%,var(--acc),transparent 60%),var(--ink-2)}
.acc-title{
  position:relative;z-index:2;padding:var(--sp-5) var(--sp-6);
  writing-mode:vertical-rl;
  font-size:1.15rem;font-weight:700;letter-spacing:.06em;color:var(--ink);
  transition:color .5s,writing-mode 0s,transform .8s var(--ease);
  white-space:nowrap;height:calc(100% - 24px);
}
.h-acc-item.open .acc-title{writing-mode:horizontal-tb;transform:none;color:#F8FCFE;font-size:1.7rem;padding:var(--sp-6)}
.acc-body{
  position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;
  padding:var(--sp-6);opacity:0;transform:translateY(16px);transition:opacity .6s .15s,transform .7s .1s var(--ease);pointer-events:none;
}
.h-acc-item.open .acc-body{opacity:1;transform:none;pointer-events:auto}
.acc-body p{color:rgba(234,244,251,.85);font-size:.92rem;margin:0 0 var(--sp-4);max-width:420px}
.acc-body .btn{margin-top:var(--sp-2)}

/* ---------- 13. 评价轮播（Testimonial Carousel） ---------- */
.voices{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:var(--sp-7);align-items:center}
.voice-stage{position:relative;min-height:300px}
.voice-slide{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;
  opacity:0;visibility:hidden;pointer-events:none;
}
.voice-slide.active{opacity:1;visibility:visible;pointer-events:auto}
.voice-mark{font-family:var(--font-mono);font-size:4rem;line-height:.6;color:var(--coral);opacity:.9}
.voice-quote{font-size:clamp(1.3rem,2.3vw,1.9rem);font-weight:650;letter-spacing:-.015em;line-height:1.5;margin:var(--sp-5) 0 var(--sp-5)}
.voice-who{display:flex;align-items:center;gap:var(--sp-3)}
.voice-who b{display:block;font-size:.98rem}
.voice-who span{font-size:.8rem;color:var(--muted)}
.voice-portraits{display:flex;justify-content:flex-end;flex-wrap:wrap}
.voice-avatar{
  width:86px;height:86px;border-radius:50%;border:4px solid var(--paper);overflow:hidden;
  margin-left:-26px;position:relative;transition:transform .5s var(--ease),opacity .4s;cursor:pointer;
  box-shadow:var(--sh-1);
}
.voice-avatar:first-child{margin-left:0}
.voice-avatar:hover{transform:translateY(-6px)}
.voice-avatar img{width:100%;height:100%;object-fit:cover;filter:saturate(.92)}
.voice-avatar .ini{
  position:absolute;inset:0;display:grid;place-items:center;font-weight:700;color:#F8FCFE;
  background:var(--ink);font-size:1.3rem;
}
.voice-avatar.current{border-color:var(--sky);transform:scale(1.08)}
.voice-nav{display:flex;gap:var(--sp-3);margin-top:var(--sp-6)}
.voice-btn{
  width:46px;height:46px;border:1px solid var(--line);border-radius:50%;background:transparent;
  display:grid;place-items:center;transition:background-color .3s,border-color .3s,transform .3s;
}
.voice-btn:hover{background:var(--ink);border-color:var(--ink);color:#F8FCFE;transform:translateY(-2px)}
.voice-btn svg{width:17px;height:17px}

/* ---------- 14. 列表页 ---------- */
.list-hero{padding:calc(var(--nav-h) + var(--sp-7)) 0 var(--sp-6);position:relative;overflow:hidden;
  background:linear-gradient(173deg,var(--acc-soft,rgba(127,196,240,.16)),transparent 58%)}
.list-hero .wash{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(50% 60% at 80% 10%,var(--acc-soft,transparent),transparent 65%)}
.list-title{font-size:clamp(2.6rem,5.6vw,5rem);font-weight:700;letter-spacing:-.035em;line-height:1.03;margin:var(--sp-3) 0 0}
.list-title .cnt{color:var(--acc,var(--coral));font-family:var(--font-mono)}
.list-desc{margin-top:var(--sp-4);color:var(--muted);font-size:var(--fs-lead);max-width:600px}
.filter-bar{display:flex;align-items:center;gap:var(--sp-3);flex-wrap:wrap;margin:var(--sp-6) 0 var(--sp-7)}
.filter-pill{
  padding:9px 20px;border-radius:999px;border:1px solid var(--line);background:transparent;
  font-size:.88rem;font-weight:500;color:var(--ink-2);transition:all .35s;
}
.filter-pill:hover{border-color:var(--sky);transform:translateY(-1px)}
.filter-pill.on{background:var(--sky);border-color:var(--sky);color:#fff}
.search-box{
  margin-left:auto;display:flex;align-items:center;gap:10px;
  border:1px solid var(--line);border-radius:999px;padding:0 18px;height:44px;min-width:240px;
  background:var(--surface);transition:border-color .3s,box-shadow .3s;
}
.search-box:focus-within{border-color:var(--sky);box-shadow:0 0 0 3px rgba(19,135,192,.14)}
.search-box svg{width:16px;height:16px;color:var(--muted);flex-shrink:0}
.search-box input{border:none;outline:none;background:transparent;font-family:inherit;font-size:.92rem;color:var(--ink);width:100%}
.count-line{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--sp-5)}
.card{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;position:relative;
  transition:transform .6s var(--ease),box-shadow .6s,border-color .4s;
}
.card:hover{transform:translateY(-8px);box-shadow:var(--sh-2);border-color:rgba(19,135,192,.45)}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden}
.card-cover .fallback{
  position:absolute;inset:0;background:radial-gradient(90% 90% at 22% 14%,var(--acc),transparent 58%),var(--ink-2);
}
.card-cover img{width:100%;height:100%;object-fit:cover;filter:saturate(.94);transition:transform 1.2s var(--ease)}
.card:hover .card-cover img{transform:scale(1.07)}
.card-cover .cover-tint{position:absolute;inset:0;background:linear-gradient(200deg,transparent 55%,rgba(14,42,68,.35));pointer-events:none}
.pin-badge{
  position:absolute;top:14px;left:14px;z-index:2;background:var(--paper);color:var(--ink);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;
  padding:5px 10px;border-radius:var(--r-sm);display:flex;align-items:center;gap:6px;
}
.pin-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
.cat-chip{
  position:absolute;top:14px;right:14px;z-index:2;background:rgba(14,42,68,.72);color:#F8FCFE;
  font-size:.74rem;padding:5px 12px;border-radius:999px;backdrop-filter:blur(4px);
}
.card-body{padding:var(--sp-5);display:flex;flex-direction:column;flex:1}
.card-body h3{margin:0 0 8px;font-size:1.18rem;font-weight:700;letter-spacing:-.01em;line-height:1.35}
.card-body .ex{margin:0;color:var(--muted);font-size:.9rem;line-height:1.7;flex:1}
.card-meta{
  margin-top:var(--sp-4);display:flex;gap:14px;flex-wrap:wrap;align-items:center;
  font-family:var(--font-mono);font-size:.76rem;color:var(--muted-2);border-top:1px solid var(--line-soft);padding-top:var(--sp-3);
}
.card-meta .rate{color:var(--coral);font-weight:700}
.card-tags{margin-top:var(--sp-3);display:flex;gap:6px;flex-wrap:wrap}
.tag{
  font-size:.72rem;color:var(--muted);border:1px solid var(--line-soft);border-radius:999px;padding:3px 10px;
}
.empty-state{
  text-align:center;padding:var(--sp-8) var(--sp-5);border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-state .es-art{font-family:var(--font-mono);font-size:3rem;color:var(--muted-2);line-height:1;margin-bottom:var(--sp-4)}
.empty-state h3{margin:0 0 8px;font-size:1.2rem}
.empty-state p{color:var(--muted);margin:0 0 var(--sp-5);font-size:.95rem}

/* ---------- 15. 详情页 ---------- */
.art-hero{padding:calc(var(--nav-h) + var(--sp-7)) 0 var(--sp-6)}
.art-badge{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.72rem;
  letter-spacing:.18em;text-transform:uppercase;color:var(--acc,var(--coral));
}
.art-badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--acc,var(--coral))}
.art-title{font-size:clamp(2.1rem,4.6vw,4.2rem);font-weight:700;letter-spacing:-.03em;line-height:1.08;margin:var(--sp-4) 0 0;max-width:900px}
.art-meta-card{
  margin-top:var(--sp-6);display:flex;gap:var(--sp-6);flex-wrap:wrap;align-items:center;
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);padding:var(--sp-4) var(--sp-5);
}
.art-meta-card .mi{font-family:var(--font-mono);font-size:.76rem;color:var(--muted);letter-spacing:.04em}
.art-meta-card .mi b{display:block;font-size:.92rem;color:var(--ink);letter-spacing:0}
.art-meta-card .mi .rate{color:var(--coral);font-family:var(--font-mono);font-size:1.1rem;font-weight:700}
.art-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:var(--sp-7);align-items:start}
.art-aside{position:sticky;top:calc(var(--nav-h) + 24px);display:flex;flex-direction:column;gap:var(--sp-4)}
.aside-box{background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);padding:var(--sp-5)}
.aside-box h4{margin:0 0 var(--sp-3);font-size:.8rem;font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.prose{font-size:1.02rem;line-height:1.95;color:var(--ink-2)}
.prose h4{margin:var(--sp-6) 0 var(--sp-3);font-size:1.25rem;color:var(--ink)}
.prose p{margin:var(--sp-3) 0}
.prose ul,.prose ol{margin:var(--sp-3) 0;padding-left:1.3em}
.prose li{margin:6px 0}
.prose li::marker{color:var(--coral)}
.prose strong{color:var(--ink);font-weight:700}
.prose blockquote{
  margin:var(--sp-5) 0;padding:var(--sp-4) var(--sp-5);border-left:3px solid var(--coral);
  background:var(--surface-2);border-radius:0 var(--r) var(--r) 0;color:var(--muted);
}
.prose table{width:100%;border-collapse:collapse;margin:var(--sp-5) 0;font-size:.9rem}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.prose th{background:var(--surface-2);font-weight:650;white-space:nowrap}
.prose em{color:var(--muted)}
.art-prevnext{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-4);margin-top:var(--sp-7)}
.pn-card{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);padding:var(--sp-5);
  display:block;transition:transform .5s var(--ease),border-color .4s;
}
.pn-card:hover{transform:translateY(-4px);border-color:rgba(19,135,192,.45)}
.pn-card .dir{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2)}
.pn-card h3{margin:10px 0 0;font-size:1.05rem;font-weight:650;line-height:1.45}
.pn-card.next{text-align:right}

/* ---------- 16. 论坛 ---------- */
.forum-hero{padding:calc(var(--nav-h) + var(--sp-6)) 0 var(--sp-5)}
.forum-layout{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:var(--sp-6);align-items:start;padding-bottom:var(--sp-8)}
.forum-side{display:flex;flex-direction:column;gap:var(--sp-4);position:sticky;top:calc(var(--nav-h) + 24px)}
.side-box{background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);padding:var(--sp-5)}
.side-box h4{margin:0 0 var(--sp-3);font-size:.78rem;font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.board-link{
  display:flex;justify-content:space-between;align-items:center;padding:11px 4px;font-size:.95rem;
  border-bottom:1px solid var(--line-soft);transition:color .3s,padding-left .3s;
}
.board-link:last-child{border-bottom:none}
.board-link:hover{color:var(--sky);padding-left:8px}
.board-link .b-count{font-family:var(--font-mono);font-size:.74rem;color:var(--muted-2)}
.board-link.on{color:var(--sky);font-weight:650}
.hot-item{padding:10px 4px;border-bottom:1px solid var(--line-soft);display:flex;gap:10px;align-items:baseline}
.hot-item:last-child{border-bottom:none}
.hot-item .rank{font-family:var(--font-mono);font-weight:700;color:var(--coral);flex-shrink:0;width:18px}
.hot-item a{font-size:.88rem;line-height:1.5;color:var(--ink-2)}
.hot-item a:hover{color:var(--coral)}
.forum-main{display:flex;flex-direction:column;gap:var(--sp-4)}
.forum-toolbar{display:flex;gap:var(--sp-3);flex-wrap:wrap;align-items:center}
.forum-search{
  display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:999px;
  padding:0 16px;height:42px;background:var(--surface);flex:1;min-width:200px;max-width:380px;
}
.forum-search input{border:none;outline:none;background:transparent;font-family:inherit;font-size:.9rem;width:100%}
.thread-row{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);padding:var(--sp-4) var(--sp-5);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:var(--sp-3);align-items:center;
  transition:transform .4s var(--ease),border-color .3s;
}
.thread-row:hover{transform:translateX(4px);border-color:var(--line)}
.thread-row .t-title{font-weight:650;font-size:1.02rem;line-height:1.5;display:flex;gap:10px;align-items:center}
.thread-row .t-title .pin-mini{font-family:var(--font-mono);font-size:.62rem;color:var(--coral);border:1px solid var(--coral);border-radius:999px;padding:2px 8px;flex-shrink:0}
.thread-row .t-sub{display:flex;gap:14px;flex-wrap:wrap;font-family:var(--font-mono);font-size:.72rem;color:var(--muted-2);margin-top:8px}
.thread-row .t-stats{display:flex;gap:18px;text-align:center;font-family:var(--font-mono);font-size:.76rem;color:var(--muted-2)}
.thread-row .t-stats b{display:block;font-size:1.05rem;color:var(--ink)}
mark{background:rgba(244,82,13,.28);color:inherit;border-radius:2px;padding:0 2px}
.post-view{background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--r-lg);padding:var(--sp-6)}
.post-view .p-title{font-size:1.6rem;font-weight:700;letter-spacing:-.015em;margin:var(--sp-3) 0}
.post-view .p-body{color:var(--ink-2);line-height:1.9;white-space:pre-wrap;margin-top:var(--sp-4)}
.reply-list{margin-top:var(--sp-5);border-top:1px solid var(--line-soft);padding-top:var(--sp-4);display:flex;flex-direction:column;gap:var(--sp-4)}
.reply-item{display:flex;gap:var(--sp-3)}
.reply-ava{
  width:36px;height:36px;border-radius:50%;background:var(--sky-d);color:#fff;flex-shrink:0;
  display:grid;place-items:center;font-size:.85rem;font-weight:700;
}
.reply-main{flex:1}
.reply-main .r-meta{display:flex;gap:12px;align-items:baseline;font-family:var(--font-mono);font-size:.72rem;color:var(--muted-2)}
.reply-main .r-meta b{font-size:.9rem;color:var(--ink);font-family:var(--font-sans)}
.reply-main .r-text{margin-top:6px;font-size:.95rem;line-height:1.75}
.composer{margin-top:var(--sp-5);border-top:1px solid var(--line-soft);padding-top:var(--sp-4)}
.composer textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2);
  padding:var(--sp-3) var(--sp-4);font-family:inherit;font-size:.95rem;line-height:1.7;resize:vertical;min-height:88px;outline:none;
}
.composer textarea:focus{border-color:var(--ink)}
.composer .c-actions{display:flex;justify-content:flex-end;margin-top:var(--sp-3)}

/* ---------- 17. CTA / 页脚 ---------- */
.cta-sec{position:relative;background:linear-gradient(155deg,var(--sky-d) 0%,var(--sky) 78%,var(--sky-l) 130%);color:#fff;padding:var(--sp-8) 0;overflow:hidden;text-align:center}
.cta-sec .wash{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(52% 60% at 50% 0%,rgba(244,82,13,.22),transparent 62%),
             radial-gradient(40% 50% at 85% 100%,rgba(37,168,181,.16),transparent 60%);
}
.cta-title{
  font-size:clamp(2.6rem,6.4vw,5.8rem);font-weight:700;letter-spacing:-.035em;line-height:1.02;
  margin:var(--sp-4) auto 0;max-width:1000px;
}
.cta-title .hl{color:var(--coral)}
.cta-sub{color:rgba(234,244,251,.62);max-width:560px;margin:var(--sp-5) auto 0}
.cta-actions{display:flex;gap:var(--sp-4);justify-content:center;margin-top:var(--sp-6);flex-wrap:wrap}
.site-footer{background:linear-gradient(160deg,var(--sky-d),#0A4D73);color:rgba(234,244,251,.78);padding:var(--sp-8) 0 var(--sp-6);border-top:1px solid var(--line-ink)}
.foot-grid{display:grid;grid-template-columns:2.2fr 1fr 1.4fr 1fr 1.2fr;gap:var(--sp-6);margin-bottom:var(--sp-7)}
.foot-wordmark{
  font-size:clamp(2rem,4vw,3.2rem);font-weight:700;letter-spacing:-.03em;color:#F8FCFE;
  line-height:1.05;margin:var(--sp-3) 0 var(--sp-4);
}
.foot-col h5{
  margin:0 0 var(--sp-4);font-family:var(--font-mono);font-size:.72rem;letter-spacing:.2em;
  text-transform:uppercase;color:rgba(234,244,251,.45);font-weight:500;
}
.foot-col a{display:block;padding:5px 0;font-size:.9rem;transition:color .3s,padding-left .3s}
.foot-col a:hover{color:var(--coral);padding-left:6px}
.foot-qr{width:96px;height:96px;border-radius:var(--r);background:#F8FCFE;padding:6px}
.foot-qr img{width:100%;height:100%;object-fit:contain}
.foot-qr-tip{font-size:.74rem;margin-top:10px;line-height:1.6}
.foot-bottom{
  border-top:1px solid var(--line-ink);padding-top:var(--sp-5);display:flex;gap:var(--sp-4);
  justify-content:space-between;flex-wrap:wrap;font-size:.8rem;
}
.foot-bottom .dim{color:rgba(234,244,251,.4)}
.foot-bottom a{color:rgba(234,244,251,.72)}
.foot-bottom a:hover{color:var(--coral)}

/* ---------- 18. 弹窗 / Toast / 灯箱 ---------- */
.modal-backdrop{
  position:fixed;inset:0;z-index:1200;background:rgba(14,42,68,.55);backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;padding:var(--sp-5);
  opacity:0;pointer-events:none;transition:opacity .35s;
}
.modal-backdrop.open{opacity:1;pointer-events:auto}
.modal{
  background:var(--paper);border-radius:var(--r-lg);max-width:520px;width:100%;max-height:88vh;overflow:auto;
  padding:var(--sp-6);position:relative;box-shadow:var(--sh-3);
  transform:translateY(18px) scale(.98);transition:transform .45s var(--ease);
}
.modal-backdrop.open .modal{transform:none}
.modal h3{margin:0 0 4px;font-size:1.4rem;letter-spacing:-.01em}
.modal .m-sub{color:var(--muted);font-size:.9rem;margin:0 0 var(--sp-5)}
.modal-close{
  position:absolute;top:var(--sp-4);right:var(--sp-4);width:34px;height:34px;border-radius:50%;
  border:1px solid var(--line);background:transparent;display:grid;place-items:center;color:var(--muted);
}
.modal-close:hover{background:var(--ink);color:#F8FCFE;border-color:var(--ink)}
.field{margin-bottom:var(--sp-4)}
.field label{display:block;font-size:.82rem;font-weight:600;margin-bottom:7px;letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);
  padding:11px 14px;font-family:inherit;font-size:.95rem;color:var(--ink);outline:none;
  transition:border-color .3s,box-shadow .3s;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(14,42,68,.05)}
.field .hint{font-size:.76rem;color:var(--muted-2);margin-top:5px}
.field .req{color:var(--coral)}
.form-actions{display:flex;gap:var(--sp-3);justify-content:flex-end;margin-top:var(--sp-5)}
.toast-stack{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);z-index:1300;display:flex;flex-direction:column;gap:10px;align-items:center;pointer-events:none}
.toast{
  background:var(--sky-d);color:#fff;padding:12px 22px;border-radius:999px;font-size:.9rem;
  box-shadow:var(--sh-2);opacity:0;transform:translateY(12px);transition:opacity .4s,transform .4s var(--ease);
}
.toast.show{opacity:1;transform:none}
.toast.err{background:#B3382C}
.lightbox{
  position:fixed;inset:0;z-index:1400;background:rgba(14,42,68,.86);display:grid;place-items:center;
  padding:var(--sp-6);opacity:0;pointer-events:none;transition:opacity .35s;
}
.lightbox.open{opacity:1;pointer-events:auto}
.lightbox img{max-width:min(92vw,560px);max-height:82vh;border-radius:var(--r-lg);background:#fff;padding:10px}
.lightbox .lb-close{position:absolute;top:24px;right:28px;color:#fff;background:transparent;border:none;font-size:1.6rem;line-height:1;width:44px;height:44px}

/* ---------- 19. 账号胶囊 ---------- */
.acct-capsule{
  display:inline-flex;align-items:center;gap:10px;padding:5px 14px 5px 6px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);cursor:pointer;
  transition:border-color .3s,box-shadow .3s,transform .3s;font-size:.88rem;font-weight:600;
}
.acct-capsule:hover{border-color:var(--sky);box-shadow:0 0 0 3px rgba(19,135,192,.14);transform:translateY(-1px)}
.acct-ava{
  width:28px;height:28px;border-radius:50%;background:var(--sky-d);color:#fff;
  display:grid;place-items:center;font-size:.8rem;font-weight:700;flex-shrink:0;
}
.acct-lv{font-family:var(--font-mono);font-size:.66rem;color:var(--coral);border:1px solid rgba(244,82,13,.5);border-radius:999px;padding:1px 7px}
.acct-float{position:fixed;top:16px;right:20px;z-index:1000}
.acct-panel{
  position:absolute;top:calc(100% + 12px);right:0;width:320px;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-3);padding:var(--sp-5);
  opacity:0;transform:translateY(-8px);pointer-events:none;transition:opacity .3s,transform .4s var(--ease);
}
.acct-slot{position:relative}
.acct-slot.open .acct-panel{opacity:1;transform:none;pointer-events:auto}
.acct-panel .ap-head{display:flex;align-items:center;gap:var(--sp-3);margin-bottom:var(--sp-4)}
.acct-panel .ap-ava{width:46px;height:46px;border-radius:50%;background:var(--ink);color:#F8FCFE;display:grid;place-items:center;font-size:1.1rem;font-weight:700}
.acct-panel .ap-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:var(--sp-4) 0}
.ap-stat{background:var(--surface-2);border-radius:var(--r);padding:10px;text-align:center}
.ap-stat b{display:block;font-family:var(--font-mono);font-size:1.15rem}
.ap-stat span{font-size:.7rem;color:var(--muted)}
.acct-panel .ap-links{display:flex;gap:var(--sp-2);flex-wrap:wrap}
.acct-panel .ap-edit{display:flex;gap:8px}
.acct-panel .ap-edit input{
  flex:1;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);
  padding:8px 12px;font-family:inherit;font-size:.88rem;outline:none;
}

/* ---------- 20. 动画基态 ---------- */
.anim-ready [data-reveal]{opacity:0;transform:translateY(30px)}
.anim-ready [data-reveal="fade"]{transform:none}
.anim-ready [data-split]{opacity:0}
.anim-ready [data-split] .line{display:block}
html.gsap-reduce [data-reveal],html.gsap-reduce [data-split]{opacity:1;transform:none}
html.gsap-reduce .hero-img-main{clip-path:none}
html.gsap-reduce .type-inline .t-img{transform:none;opacity:1}
.no-js .anim-ready [data-reveal],.no-js .anim-ready [data-split]{opacity:1;transform:none}

/* ---------- 21. 页面切换过渡：三条蓝带横扫 + ACM（无阴影） ---------- */
.page-bands{position:fixed;inset:0;z-index:2200;pointer-events:none}
.page-bands.hide{display:none}
.page-bands .band{
  position:absolute;left:0;right:0;height:33.3334%;
  background:var(--sky);
  transform:none; /* 位移完全交给 GSAP，避免与 CSS 默认值叠加 */
  will-change:transform;
}
.page-bands .b1{top:0}
.page-bands .b2{top:33.3334%}
.page-bands .b3{top:66.6668%}
.page-bands.cover .band{transform:translateX(0)}
.band-letters{
  position:absolute;inset:0;display:grid;place-items:center;
  /* 系统等宽字体：不依赖 WebFont，杜绝过渡瞬间字体替换抖动 */
  font-family:Consolas,"SF Mono",Menlo,"Liberation Mono","Courier New",monospace;
  font-weight:800;color:#fff;
  font-size:clamp(8rem,24vw,24rem);letter-spacing:-.05em;line-height:.85;
  opacity:0;user-select:none;will-change:transform,opacity;
}
.page-bands.cover .band-letters{opacity:1}

/* 版本水印（排查缓存用） */
.ver-badge{
  display:inline-block;margin-left:8px;font-family:var(--font-mono);font-size:.62rem;
  color:rgba(244,82,13,.9);border:1px solid rgba(244,82,13,.5);border-radius:999px;
  padding:1px 8px;vertical-align:middle;
}

/* ---------- 22. 响应式 ---------- */
@media(max-width:1120px){
  .hero-inner{grid-template-columns:1fr;gap:var(--sp-6)}
  .hero-art{height:420px;margin-top:var(--sp-5)}
  .hero-img-main{right:4%;width:min(56%,420px)}
  .hero-img-float{left:10%}
  .sec-head{grid-template-columns:1fr;gap:var(--sp-4)}
  .sec-head .right{justify-self:start;text-align:left}
  .voices{grid-template-columns:1fr;gap:var(--sp-6)}
  .voice-portraits{justify-content:flex-start}
  .art-layout{grid-template-columns:1fr}
  .art-aside{position:static;flex-direction:row;flex-wrap:wrap}
  .art-aside .aside-box{flex:1;min-width:220px}
  .foot-grid{grid-template-columns:1fr 1fr 1fr}
  .forum-layout{grid-template-columns:1fr}
  .forum-side{position:static;flex-direction:row;flex-wrap:wrap}
  .forum-side .side-box{flex:1;min-width:240px}
}
@media(max-width:960px){
  .bento .span-7,.bento .span-5,.bento .span-8,.bento .span-4,.bento .span-6{grid-column:span 12}
  .split-pin{grid-template-columns:1fr;gap:var(--sp-6)}
  .pin-col{height:auto}
  .h-acc{height:auto;flex-direction:column}
  .h-acc-item{height:64px}
  .h-acc-item.open{height:340px}
  .acc-title{writing-mode:horizontal-tb;transform:none;height:auto;padding:18px var(--sp-5)}
  .stack-card{grid-template-columns:1fr;gap:var(--sp-4)}
  .stack-media{order:-1}
  .art-prevnext{grid-template-columns:1fr}
}
@media(max-width:720px){
  .nav-links{display:none}
  .nav-burger{display:flex}
  .mobile-drawer{display:flex}
  .nav-actions .btn{display:none}
  .hero{min-height:auto;padding-top:calc(var(--nav-h) + var(--sp-7))}
  .hero-img-float{display:none}
  .hero-art{height:320px}
  .hero-img-main{right:0;width:72%}
  .cta-title{letter-spacing:-.02em}
  .foot-grid{grid-template-columns:1fr 1fr}
  .search-box{min-width:100%;order:3;margin-left:0}
  .card-grid{grid-template-columns:1fr}
  .gallery-col{columns:1}
  .modal{padding:var(--sp-5)}
}