/* ============ FotoCollage UI Portfolio — v6 dark archive ============
   深色档案风(v4 版视觉语言):近黑画布 + 品牌红/Pro金/AI紫蓝 + Inter/Roboto/JetBrains Mono
   结构沿用 v4/v5 编辑式版面,内容不变 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Roboto:wght@400;500;700;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  --bg:#08080A;
  --bg-2:#0E0E11;
  --surface:#131316;
  --surface-2:#1A1A1E;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --tx:#F2F0ED;
  --tx-2:#A9A6A2;
  --tx-3:#77746F;

  --brand:        #F55574;
  --brand-2:      #F87A6E;
  --brand-3:      #FFD4D8;
  --brand-glow:   rgba(245,85,116,.14);

  --gold:         #FFC667;
  --gold-2:       #E8A63C;
  --gold-3:       #A87024;
  --gold-glow:    rgba(255,198,103,.12);

  --violet:       #728DFC;
  --violet-2:     #5945F4;
  --violet-glow:  rgba(114,141,252,.14);

  --blue:         #6FA8E8;
  --ok:#5AD394; --err:#FF7A6E;

  --r:14px;
  --max:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--tx);
  font-family:"Inter","Roboto",-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%}
code{font-family:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;font-size:12px;letter-spacing:.02em}
h1,h2,h3,h4,h5{font-weight:700;letter-spacing:-.02em;line-height:1.2}
em{font-style:normal}
a{color:inherit;text-decoration:none}
::selection{background:var(--brand);color:#fff}

/* 隐藏滚动条(iframe 嵌入时更干净) */
html{scrollbar-width:none;-ms-overflow-style:none}
html::-webkit-scrollbar,body::-webkit-scrollbar{width:0;height:0;display:none}

/* ============ progress ============ */
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:90;background:transparent}
.progress i{display:block;height:100%;
  background:linear-gradient(90deg,var(--brand),var(--gold));
  transform:scaleX(0);transform-origin:0 50%;transition:transform .1s linear}

/* ============ nav ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:80;display:flex;align-items:center;gap:28px;
  padding:16px 40px;backdrop-filter:blur(18px) saturate(160%);
  background:linear-gradient(180deg,rgba(8,8,10,.88),rgba(8,8,10,.6));border-bottom:1px solid transparent;
  transition:border-color .3s}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:-.02em;font-size:15px}
.brand .dot{width:9px;height:9px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px var(--brand-glow);animation:pulse 2.6s var(--ease) infinite}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px var(--brand-glow)}
  50%{box-shadow:0 0 0 9px rgba(245,85,116,0)}
}
.nav-links{display:flex;gap:26px;margin-left:auto;font-size:13.5px;color:var(--tx-2)}
.nav-links a{position:relative;transition:color .2s}
.nav-links a:hover,.nav-links a.on{color:var(--tx)}
.nav-links a.on::before{content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--brand)}
.nav-badge{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--tx-3);
  border:1px solid var(--line-2);border-radius:99px;padding:5px 12px;background:rgba(255,255,255,.03)}
@media(max-width:1080px){.nav-links{display:none}}

/* ============ hero ============ */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  padding:130px 40px 70px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(760px 520px at 78% 18%,var(--brand-glow),transparent 62%),
    radial-gradient(620px 460px at 14% 78%,rgba(114,141,252,.11),transparent 66%),
    radial-gradient(900px 700px at 50% 120%,var(--gold-glow),transparent 70%);
}
.hero-bg::after{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:74px 74px;
  mask-image:radial-gradient(ellipse 80% 62% at 50% 42%,#000,transparent 78%)}
.hero-inner{position:relative;z-index:1;max-width:var(--max);margin:0 auto;width:100%;
  display:grid;grid-template-columns:minmax(0,1.04fr) minmax(0,1fr);gap:40px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.09em;text-transform:uppercase;
  color:var(--tx-2);border:1px solid var(--line-2);border-radius:99px;padding:7px 15px;margin-bottom:26px;
  background:rgba(255,255,255,.03);backdrop-filter:blur(6px)}
.eyebrow .pulse{width:6px;height:6px;border-radius:50%;background:var(--brand);animation:pulse 2.6s infinite}
.hero h1{font-size:clamp(52px,7.4vw,96px);letter-spacing:-.045em;line-height:1.12;font-weight:900;
  padding-bottom:.06em;
  background:linear-gradient(170deg,#FFFDF6 6%,#FFE9BE 46%,#FFC667 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:14px}
.hero-sub{color:var(--tx-2);font-size:16px;max-width:520px;line-height:1.85}
.hero-meta{display:flex;gap:0;margin-top:40px;flex-wrap:wrap}
.hero-meta div{display:flex;flex-direction:column;gap:3px;padding:2px 26px 2px 0;margin-right:26px;
  border-right:1px solid var(--line)}
.hero-meta div:last-child{border-right:none;margin-right:0;padding-right:0}
.hero-meta strong{font-size:24px;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.hero-meta span{font-size:11.5px;color:var(--tx-3);letter-spacing:.04em}

.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;
  gap:20px;height:min(72vh,620px);min-width:0}
.showcase-wrap{position:relative;flex:0 0 auto}
.showcase-glow{position:absolute;inset:-14% -30%;z-index:0;border-radius:50%;
  background:
    radial-gradient(closest-side,rgba(245,85,116,.22),transparent 72%),
    radial-gradient(closest-side at 60% 80%,rgba(255,198,103,.14),transparent 70%);
  filter:blur(10px)}
.showcase{position:relative;z-index:1;width:min(268px,54vw);border-radius:28px;overflow:hidden;
  border:1px solid rgba(255,255,255,.16);background:#111;
  box-shadow:0 60px 120px -40px rgba(0,0,0,.9),0 0 0 6px rgba(255,255,255,.02),
             0 0 90px -20px rgba(245,85,116,.22);
  animation:float 7s ease-in-out infinite}
.showcase img{width:100%;height:auto;display:block}
.showcase::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(200deg,rgba(255,255,255,.14),transparent 32%)}
.showcase-chip{position:absolute;z-index:2;font-size:11.5px;font-weight:600;letter-spacing:.01em;
  color:var(--tx);background:rgba(19,19,22,.82);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(10px);border-radius:99px;padding:7px 14px;white-space:nowrap;
  box-shadow:0 12px 30px -14px rgba(0,0,0,.7)}
.chip-a{left:-14%;top:16%;animation:float 6s ease-in-out infinite .4s}
.chip-b{right:-12%;bottom:18%;animation:float 6s ease-in-out infinite 1.2s}
.chip-a::before,.chip-b::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--brand);margin-right:8px;vertical-align:1px;
  box-shadow:0 0 0 3px var(--brand-glow)}
.chip-b::before{background:var(--gold);box-shadow:0 0 0 3px var(--gold-glow)}
.flank{display:flex;flex-direction:column;gap:36px;z-index:1;min-width:0;flex:1 1 0}
.flank-right{align-items:flex-end;text-align:right}
.flank-item{display:flex;align-items:flex-start;gap:12px;animation:flankIn 1s var(--ease) both}
.flank-right .flank-item{flex-direction:row-reverse}
.flank-item:nth-child(2){animation-delay:.12s}
.flank-item:nth-child(3){animation-delay:.24s}
@keyframes flankIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.flank-dot{flex:0 0 auto;width:8px;height:8px;border-radius:50%;margin-top:5px;
  background:var(--brand);box-shadow:0 0 0 4px var(--brand-glow)}
.flank-left .flank-item:nth-child(2) .flank-dot,
.flank-right .flank-item:nth-child(3) .flank-dot{background:var(--gold);box-shadow:0 0 0 4px var(--gold-glow)}
.flank-left .flank-item:nth-child(3) .flank-dot,
.flank-right .flank-item:nth-child(2) .flank-dot{background:var(--violet);box-shadow:0 0 0 4px var(--violet-glow)}
.flank-item div{display:flex;flex-direction:column;gap:2px}
.flank-item code{font-size:10.5px;color:var(--brand);letter-spacing:.12em}
.flank-item strong{font-size:13.5px;font-weight:620;letter-spacing:-.01em;color:var(--tx)}
.flank-item em{font-size:11px;color:var(--tx-3);font-style:normal;max-width:132px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@keyframes float{0%,100%{translate:0 0}50%{translate:0 -13px}}
@media(max-width:1280px){.flank-item em{display:none}.hero-visual{gap:16px}}
@media(max-width:1080px){.showcase{width:min(240px,52vw)}}
@media(max-width:920px){
  .hero-inner{grid-template-columns:1fr;gap:56px}
  .hero-visual{height:auto;padding:26px 0 10px}
  .flank{gap:22px}
  .flank-item strong{font-size:12.5px}
  .showcase{width:min(250px,58vw)}
  .chip-a{left:-6%}.chip-b{right:-4%}
}
@media(max-width:560px){
  .hero-visual{flex-direction:column;gap:26px}
  .flank{flex-direction:row;flex-wrap:wrap;gap:14px 22px;justify-content:center}
  .flank-right{align-items:flex-start;text-align:left;order:3}
  .flank-item div{align-items:flex-start}
  .flank-item em{display:none}
  .showcase-chip{display:none}
}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);font-size:11px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--tx-3);animation:float 3s infinite;z-index:3}

/* ============ section shell ============ */
.sec{max-width:var(--max);margin:0 auto;padding:104px 40px 96px;position:relative}
/* 深色分节:比主画布略亮,全宽背景铺满视口,形成深浅节奏 */
.sec-alt{
  --bg:#0B0B0E;--bg-2:#111114;--surface:#151519;--surface-2:#1C1C21;
  --line:rgba(255,255,255,.09);--line-2:rgba(255,255,255,.17);
  --tx:#F5F3F0;--tx-2:#ADA9A5;--tx-3:#7B7873;
  color:var(--tx)}
.sec-alt::before{content:"";position:absolute;inset:0 -100vmax;z-index:-1;
  background:linear-gradient(180deg,#0D0D10,#0B0B0E 40%,#0B0B0E);
  border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.sec{position:relative}
.sec-head{display:flex;align-items:flex-end;gap:20px;margin-bottom:52px;position:relative}
.sec-no{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:13px;color:var(--tx);
  border:1px solid var(--line-2);border-radius:8px;padding:7px 11px;background:var(--surface);
  letter-spacing:.06em;flex:0 0 auto}
.sec-titles{display:flex;flex-direction:column;gap:4px}
.sec-titles .sec-en{font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--brand)}
.sec-titles h2{font-size:clamp(26px,3.2vw,36px);letter-spacing:-.03em}
.sec-ghost{margin-left:auto;font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:clamp(46px,7vw,88px);font-weight:500;line-height:.8;
  color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.1);user-select:none}
.sec-lead{color:var(--tx-2);max-width:760px;margin:-22px 0 48px;font-size:15px}
.sec-lead b{color:var(--tx);font-weight:600}

/* ============ 01 overview —— 导读 + 台账 ============ */
.ov-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:64px;margin-bottom:64px}
.ov-lead .lead-text{font-size:clamp(16px,1.6vw,19px);line-height:1.95;color:var(--tx-2);
  margin-bottom:22px;font-weight:400}
.ov-lead .lead-text:first-child{color:var(--tx);font-weight:500}
.lead-text b{color:var(--brand);font-weight:600}

.ledger{border-left:2px solid var(--brand);padding:6px 0 6px 26px}
.ledger-cap{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--tx-3);margin-bottom:18px}
.ledger-row{display:flex;align-items:baseline;gap:12px;padding:11px 0;
  border-bottom:1px dashed rgba(255,255,255,.1)}
.ledger-row span{font-size:13.5px;color:var(--tx-2);white-space:nowrap}
.ledger-row span em{font-size:10px;color:var(--tx-3);letter-spacing:.06em;margin-left:6px}
.ledger-row i{flex:1;border-bottom:1px dotted rgba(255,255,255,.16);transform:translateY(-4px)}
.ledger-row b{font-size:19px;font-variant-numeric:tabular-nums;letter-spacing:-.03em}
@media(max-width:920px){.ov-grid{grid-template-columns:1fr;gap:36px}}

.ov-principles{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.p-card{background:var(--bg-2);padding:28px 24px;position:relative;transition:background .3s}
.p-card:hover{background:var(--surface)}
.p-no{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11px;color:var(--brand);
  letter-spacing:.12em;display:inline-block;margin-bottom:14px;
  border-bottom:2px solid var(--brand);padding-bottom:4px}
.p-card h4{font-size:16px;margin-bottom:10px}
.p-card p{font-size:13.5px;color:var(--tx-2);line-height:1.85}
@media(max-width:920px){.ov-principles{grid-template-columns:1fr}}

/* ============ tabs(设计系统 / 状态共用) ============ */
.tab-bar{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:34px;flex-wrap:wrap}
.tab-btn{appearance:none;background:none;border:0;cursor:pointer;color:var(--tx-3);
  font-family:inherit;font-size:13.5px;font-weight:600;letter-spacing:-.01em;
  padding:11px 18px 13px;position:relative;transition:color .25s}
.tab-btn::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--gold));transform:scaleX(0);
  transform-origin:0 50%;transition:transform .35s var(--ease)}
.tab-btn:hover{color:var(--tx-2)}
.tab-btn.on{color:var(--tx)}
.tab-btn.on::after{transform:scaleX(1)}
.tab-panel{display:none}
.tab-panel.on{display:block;animation:panelIn .45s var(--ease)}
@keyframes panelIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.tab-desc{color:var(--tx-2);font-size:14px;max-width:800px;margin-bottom:28px}
.tab-desc code{color:var(--brand);background:var(--brand-glow);padding:2px 6px;border-radius:5px}

/* ---- 色彩:横向条状 swatch ---- */
.sw-rows{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 28px}
.sw-row{display:grid;grid-template-columns:30px auto auto 1fr;align-items:center;gap:12px;
  padding:9px 12px;border-radius:9px;transition:background .25s}
.sw-row:hover{background:rgba(255,255,255,.04)}
.sw-row i{width:30px;height:30px;border-radius:7px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.16)}
.sw-row code{font-size:11px;color:var(--tx-2)}
.sw-row b{font-size:13px;font-weight:600}
.sw-row span{font-size:11.5px;color:var(--tx-3);text-align:right;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:760px){.sw-rows{grid-template-columns:1fr}}

/* ---- 渐变:满宽条 ---- */
.grad-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.grad{height:72px;border-radius:10px;position:relative;overflow:hidden;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
.grad figcaption{position:absolute;left:12px;bottom:10px;font-size:11.5px;font-weight:600;
  color:#10131A;background:rgba(255,255,255,.82);backdrop-filter:blur(6px);
  padding:3px 10px;border-radius:99px}
@media(max-width:760px){.grad-strip{grid-template-columns:1fr}}

/* ---- 字阶:spec 行 ---- */
.type-spec{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface)}
.ts-row{display:grid;grid-template-columns:110px 58px 130px 1fr;align-items:baseline;gap:20px;
  padding:13px 24px;border-bottom:1px solid var(--line)}
.ts-row:last-child{border-bottom:0}
.ts-row:hover{background:rgba(255,255,255,.02)}
.ts-demo{font-weight:700;letter-spacing:-.02em;color:var(--tx)}
.ts-row code{color:var(--brand);font-variant-numeric:tabular-nums}
.ts-row b{font-size:13.5px}
.ts-row span:last-child{font-size:11.5px;color:var(--tx-3);text-align:right}
@media(max-width:700px){.ts-row{grid-template-columns:80px 46px 1fr}.ts-row span:last-child{display:none}}
.fam-row{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.fam-row span{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--tx-2);
  border:1px solid var(--line);border-radius:99px;padding:6px 14px;background:var(--surface)}
.fam-row em{font-size:10.5px;color:var(--brand)}

/* ---- 圆角/阴影:双列 ---- */
.shape-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:44px}
.shape-grid h5{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--tx-3);margin-bottom:16px}
.rad{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.rad-demo{height:62px;background:linear-gradient(150deg,#1C1C21,#131316);
  border:1px solid var(--line-2)}
.rad-demo.sh{background:linear-gradient(150deg,#222228,#17171B);border-color:var(--line)}
.rad code{color:var(--tx)}
.rad span{font-size:11.5px;color:var(--tx-3)}
@media(max-width:760px){.shape-grid{grid-template-columns:1fr}}

/* ============ 03 module index —— 目录行 ============ */
.toc{border-top:1px solid var(--line)}
.toc-row{position:relative;display:grid;grid-template-columns:44px 190px 1fr auto 76px;
  align-items:center;gap:16px;padding:17px 10px;border-bottom:1px solid var(--line);
  transition:background .25s,padding-left .3s var(--ease)}
.toc-row:hover{background:rgba(245,85,116,.06);padding-left:22px}
.toc-row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--brand);transform:scaleY(0);transition:transform .3s var(--ease)}
.toc-row:hover::before{transform:scaleY(1)}
.toc-no{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11px;color:var(--brand);letter-spacing:.08em}
.toc-cn{font-size:15.5px;font-weight:620;letter-spacing:-.01em;white-space:nowrap}
.toc-en{font-size:11.5px;color:var(--tx-3);letter-spacing:.05em;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis}
.toc-dots{border-bottom:1px dotted rgba(255,255,255,.2);transform:translateY(-4px)}
.toc-n{font-size:17px;font-weight:640;font-variant-numeric:tabular-nums;text-align:right;letter-spacing:-.03em}
.toc-n em{font-size:10.5px;color:var(--tx-3);font-weight:400;margin-left:2px}
.toc-row.dim .toc-cn{color:var(--tx-2);font-weight:520}
.toc-row.dim .toc-no{color:var(--tx-3)}
@media(max-width:820px){.toc-row{grid-template-columns:36px 1fr 70px}.toc-en,.toc-dots{display:none}}

/* 悬停预览浮窗 */
.toc-preview{position:fixed;z-index:70;width:148px;border-radius:16px;overflow:hidden;
  border:1px solid rgba(255,255,255,.16);background:#111;pointer-events:none;
  box-shadow:0 30px 70px -22px rgba(0,0,0,.85),0 0 40px -10px rgba(245,85,116,.2);
  opacity:0;transform:scale(.92) rotate(-1.5deg);transition:opacity .2s,transform .25s var(--ease)}
.toc-preview.show{opacity:1;transform:scale(1) rotate(-1.5deg)}
.toc-preview img{width:100%}
@media(max-width:820px){.toc-preview{display:none}}

/* ============ 04 modules —— 杂志式条带 ============ */
.mod{padding:58px 0}
.mod + .mod{border-top:1px dashed var(--line)}
.mod:first-of-type{padding-top:8px}
.mod-band{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;position:relative}
.mod:nth-of-type(even) .mod-band{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}
.mod:nth-of-type(even) .mod-info{order:2}
.mod-ghost{position:absolute;top:-26px;left:-18px;z-index:0;
  font-family:"JetBrains Mono",ui-monospace,monospace;font-size:130px;font-weight:500;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.1);user-select:none;pointer-events:none}
.mod-info{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.mod-kicker{display:flex;align-items:center;gap:12px;font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--tx-3)}
.mod-kicker b{color:var(--brand);font-weight:600}
.mod-kicker span{border:1px solid var(--line-2);border-radius:99px;padding:3px 10px;letter-spacing:.06em}
.mod-info h3{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.03em}
.mod-info > p{color:var(--tx-2);font-size:14.5px;line-height:1.9}
.mod-points{list-style:none;display:flex;flex-direction:column;gap:9px;margin-top:2px}
.mod-points li{position:relative;padding-left:22px;font-size:13.5px;color:var(--tx-2);line-height:1.75}
.mod-points li::before{content:"—";position:absolute;left:0;top:0;color:var(--brand);font-weight:600}

.mod-shots{display:flex;flex-wrap:wrap;gap:18px;align-content:flex-start;position:relative;z-index:1}
/* 首页 5 主题:3+2 居中网格 */
#m-home .mod-shots{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
#m-home .shot{width:auto;grid-column:span 2}
#m-home .shot:nth-child(4){grid-column:2/4}
#m-home .shot:nth-child(5){grid-column:4/6}
@media(max-width:920px){
  #m-home .mod-shots{display:flex}
  #m-home .shot{width:160px}
}
.shot{flex:0 0 auto;width:184px}
.shot img{width:100%;border-radius:18px;border:1px solid rgba(255,255,255,.1);background:#111;
  box-shadow:0 18px 44px -22px rgba(0,0,0,.75);cursor:zoom-in;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .3s}
.shot:hover img{transform:translateY(-7px) rotate(-.6deg);
  border-color:rgba(245,85,116,.5);box-shadow:0 34px 64px -24px rgba(0,0,0,.85)}
.shot figcaption{margin-top:10px;display:flex;flex-direction:column;gap:1px;padding-left:2px}
.shot figcaption b{font-size:12.5px;font-weight:620}
.shot figcaption span{font-size:11px;color:var(--tx-3)}
@media(max-width:920px){
  .mod-band,.mod:nth-of-type(even) .mod-band{grid-template-columns:1fr;gap:28px}
  .mod:nth-of-type(even) .mod-info{order:0}
  .mod-ghost{font-size:88px;top:-14px;left:-6px}
  .shot{width:160px}
}

/* ============ 05 states ============ */
.st-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.st-card{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface);
  transition:border-color .3s,transform .4s var(--ease),box-shadow .4s var(--ease);
  box-shadow:0 12px 32px -20px rgba(0,0,0,.6)}
.st-card:hover{border-color:rgba(255,198,103,.45);transform:translateY(-5px);
  box-shadow:0 26px 52px -22px rgba(0,0,0,.75)}
.st-img{position:relative;background:#151517}
.st-img img{width:100%;cursor:zoom-in}
.st-tag{position:absolute;top:10px;left:10px;font-size:10.5px;font-weight:600;letter-spacing:.05em;
  padding:3px 9px;border-radius:99px;background:rgba(8,8,10,.72);border:1px solid rgba(255,255,255,.2);
  backdrop-filter:blur(8px);color:#EDE6DF}
.st-tag.t-brand{color:#FFD4D8;border-color:rgba(245,85,116,.5)}
.st-tag.t-gold{color:var(--gold);border-color:rgba(255,198,103,.45)}
.st-tag.t-ok{color:#8FE0B4;border-color:rgba(90,211,148,.4)}
.st-tag.t-err{color:#FFB3A9;border-color:rgba(255,122,110,.4)}
.st-card figcaption{padding:14px 16px 16px;display:flex;flex-direction:column;gap:4px}
.st-card b{font-size:13.5px;font-weight:620}
.st-card span{font-size:11.5px;color:var(--tx-3);line-height:1.6}
@media(max-width:920px){.st-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.st-grid{grid-template-columns:1fr}}

/* ============ 06 closing —— 封底 ============ */
.closing{padding-bottom:50px}
.backcover{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:64px;align-items:start}
.bc-copy .bc-label{display:inline-block;font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--brand);margin-bottom:18px}
.bc-copy h2{font-size:clamp(28px,3.8vw,46px);letter-spacing:-.04em;line-height:1.16;margin-bottom:22px;
  font-weight:900}
.bc-copy p{color:var(--tx-2);max-width:560px;font-size:15px;line-height:1.95}
.bc-copy p b{color:var(--tx);font-weight:600}
.bc-actions{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:620;
  padding:12px 22px;border-radius:99px;letter-spacing:-.01em;cursor:pointer;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
  box-shadow:0 10px 26px -10px rgba(245,85,116,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px -10px rgba(245,85,116,.65)}
.btn-secondary{background:transparent;border:1px solid var(--line-2);color:var(--tx)}
.btn-secondary:hover{border-color:var(--brand);color:var(--brand)}

.bc-side{display:flex;flex-direction:column;gap:30px}
.bc-strip{display:flex;justify-content:center;gap:-6px}
.bc-phone{width:31%;margin:0 -6px;border-radius:14px;overflow:hidden;
  border:1px solid rgba(255,255,255,.14);background:#111;
  box-shadow:0 22px 44px -18px rgba(0,0,0,.7)}
.bc-phone:nth-child(2){transform:translateY(14px);z-index:1;
  border-color:rgba(245,85,116,.45);box-shadow:0 30px 60px -18px rgba(0,0,0,.8),0 0 50px -8px rgba(245,85,116,.3)}
.bc-phone img{width:100%}
.bc-spec{display:flex;flex-direction:column}
.bc-spec > div{display:flex;justify-content:space-between;align-items:baseline;gap:14px;
  padding:10px 0;border-bottom:1px dashed var(--line)}
.bc-spec dt{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--tx-3)}
.bc-spec dd{font-size:13.5px;color:var(--tx);text-align:right}
@media(max-width:920px){.backcover{grid-template-columns:1fr;gap:44px}.bc-side{max-width:420px}}

.foot{max-width:var(--max);margin:64px auto 0;display:flex;justify-content:space-between;gap:18px;
  font-size:11.5px;color:var(--tx-3);flex-wrap:wrap;border-top:1px solid var(--line);padding-top:22px}

/* ---- reveal ---- */
body.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
body.js .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body.js .reveal{opacity:1;transform:none}
  .showcase,.showcase-chip,.scroll-hint,.eyebrow .pulse,.brand .dot,.flank-item{animation:none}
}

/* ---- lightbox ---- */
.lightbox{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;
  background:rgba(5,5,7,.93);backdrop-filter:blur(22px);padding:56px 84px}
.lightbox.on{display:flex}
.lightbox img{max-height:calc(100vh - 130px);max-width:100%;width:auto;border-radius:16px;
  box-shadow:0 40px 100px -20px rgba(0,0,0,.8);border:1px solid rgba(255,255,255,.18)}
.lb-close,.lb-prev,.lb-next{position:absolute;border:1px solid rgba(255,255,255,.22);background:rgba(19,19,22,.85);
  color:var(--tx);border-radius:50%;cursor:pointer;display:grid;place-items:center;backdrop-filter:blur(10px)}
.lb-close{top:24px;right:28px;width:40px;height:40px;font-size:22px}
.lb-prev,.lb-next{top:50%;transform:translateY(-50%);width:46px;height:46px;font-size:26px}
.lb-prev{left:24px}.lb-next{right:24px}
.lb-close:hover,.lb-prev:hover,.lb-next:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.lb-name{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);font-size:12.5px;color:var(--tx);
  background:rgba(19,19,22,.85);border:1px solid rgba(255,255,255,.16);border-radius:99px;padding:7px 18px;backdrop-filter:blur(10px)}
@media(max-width:760px){.lightbox{padding:40px 12px}.lb-prev{left:6px}.lb-next{right:6px}
  .lb-prev,.lb-next{width:38px;height:38px}}