feat: 本機新增頁面與導覽調整

assets/css/captain-aura.css

@@ -0,0 +1,101 @@
+/* 隊長的氣場 — 殷志源台北見面會存檔頁（2018-07-21） */
+
+body.captain-aura-page {
+    background-color: var(--color-bg);
+    background-image: url('../images/concert/captain-aura/bg-digital-placeholder.svg');
+    background-repeat: repeat;
+}
+
+body.captain-aura-page .captain-aura-hero {
+    width: 100%;
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 0 20px;
+    box-sizing: border-box;
+}
+
+body.captain-aura-page .captain-aura-hero img {
+    display: block;
+    width: 100%;
+    height: auto;
+    border-radius: 4px;
+}
+
+body.captain-aura-page .captain-aura-main {
+    max-width: 893px;
+    margin: 0 auto;
+    padding: 50px 20px 72px;
+    box-sizing: border-box;
+}
+
+body.captain-aura-page .captain-aura-act {
+    margin-bottom: 2.5rem;
+}
+
+body.captain-aura-page .captain-aura-act:last-child {
+    margin-bottom: 0;
+}
+
+body.captain-aura-page .captain-aura-act__title {
+    margin: 0 0 1rem;
+    text-align: center;
+    color: var(--color-brand);
+    font-size: 1.65rem;
+    font-weight: 700;
+    line-height: 1.35;
+    text-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
+}
+
+body.captain-aura-page .captain-aura-act__title--plain {
+    color: var(--color-text-inverse);
+    text-shadow: none;
+    font-size: 1.35rem;
+    margin-bottom: 0.65rem;
+}
+
+body.captain-aura-page .captain-aura-act__title--plain + .captain-aura-act__title--plain {
+    margin-top: 0;
+}
+
+body.captain-aura-page .captain-aura-divider {
+    margin: 2.75rem 0;
+    text-align: center;
+    color: var(--color-brand);
+    font-size: 1.1rem;
+    font-weight: 700;
+    letter-spacing: 0.2em;
+}
+
+body.captain-aura-page .captain-aura-videos {
+    display: flex;
+    flex-direction: column;
+    gap: 1rem;
+}
+
+body.captain-aura-page .captain-aura-video {
+    position: relative;
+    width: 100%;
+    padding-bottom: 56.25%;
+    background: #000;
+    border-radius: 4px;
+    overflow: hidden;
+}
+
+body.captain-aura-page .captain-aura-video iframe {
+    position: absolute;
+    inset: 0;
+    width: 100%;
+    height: 100%;
+    border: 0;
+}
+
+@media (max-width: 640px) {
+    body.captain-aura-page .captain-aura-main {
+        padding-top: 32px;
+        padding-bottom: 48px;
+    }
+
+    body.captain-aura-page .captain-aura-act__title {
+        font-size: 1.35rem;
+    }
+}

assets/images/concert/captain-aura/bg-digital-placeholder.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 64 64" role="img" aria-hidden="true">
+  <rect width="64" height="64" fill="#0d0d0d"/>
+  <path d="M0 32h64M32 0v64" stroke="#1f1f1f" stroke-width="1"/>
+  <circle cx="32" cy="32" r="1.5" fill="#2a2a2a"/>
+</svg>

assets/images/concert/captain-aura/hero-placeholder.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1920" height="1003" viewBox="0 0 1920 1003" role="img" aria-label="kEG…ÿÛ sli01.png	">
+  <defs>
+    <linearGradient id="g" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" stop-color="#1a1a1a"/>
+      <stop offset="50%" stop-color="#2a2410"/>
+      <stop offset="100%" stop-color="#0a0a0a"/>
+    </linearGradient>
+  </defs>
+  <rect width="1920" height="1003" fill="url(#g)"/>
+  <rect x="80" y="80" width="1760" height="843" fill="none" stroke="#ffcc00" stroke-width="4" stroke-dasharray="16 12" opacity="0.45"/>
+  <text x="960" y="470" text-anchor="middle" fill="#ffcc00" font-family="sans-serif" font-size="42" font-weight="700">G1 private · 1theland in Taipei</text>
+  <text x="960" y="540" text-anchor="middle" fill="#f4f4f4" font-family="sans-serif" font-size="28" opacity="0.85">kEG · ËÿÛ hero.jpgŸ sli01.png	</text>
+</svg>

assets/js/portal-nav.js

@@ -264,7 +264,7 @@
     <li><a target="_blank" rel="noopener noreferrer" href="${rp}concert/concert.html"><span class="portal-nav__label">現場的震撼</span></a>
         <ul class="portal-submenu">
             <li><a target="_blank" rel="noopener noreferrer" href="${rp}concert/concert.html"><span class="portal-nav__label">集結水晶</span></a></li>
-            <li><a href="#" data-coming-soon="true" aria-disabled="true" aria-label="隊長的氣場，尚無開放"><span class="portal-nav__label">隊長的氣場</span></a></li>
+            <li><a target="_blank" rel="noopener noreferrer" href="${rp}concert/captain-aura.html"><span class="portal-nav__label">隊長的氣場</span></a></li>
         </ul>
     </li>
     <li><a target="_blank" rel="noopener noreferrer" href="${rp}albums/albums.html"><span class="portal-nav__label">黃色留聲機</span></a>