diff --git a/package-lock.json b/package-lock.json
index a101ddd..a3d48b1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -58,7 +58,6 @@
       "integrity": "sha512-e7jT4DxYvIDLk1ZHmU/m/mB19rex9sv0c2ftBtjSBv+kVM/902eh0fINUzD7UwLLNR+jU585GxUJ8/EBfAM5fw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.27.1",
         "@babel/generator": "^7.28.5",
@@ -1525,7 +1524,6 @@
       "integrity": "sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -1631,7 +1629,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.9.0",
         "caniuse-lite": "^1.0.30001759",
@@ -1853,7 +1850,6 @@
       "integrity": "sha512-LEyamqS7W5HB3ujJyvi0HQK/dtVINZvd5mAAp9eT5S/ujByGjiZLCzPcHVzuXbpJDJF/cxwHlfceVUDZ2lnSTw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.8.0",
         "@eslint-community/regexpp": "^4.12.1",
@@ -2381,8 +2377,7 @@
       "version": "1.9.4",
       "resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.9.4.tgz",
       "integrity": "sha512-nxS1ynzJOmOlHp+iL3FyWqK89GtNL8U8rvlMOsQdTTssxZwCXh8N2NB3GDQOL+YR3XnWyZAxwQixURb+FA74PA==",
-      "license": "BSD-2-Clause",
-      "peer": true
+      "license": "BSD-2-Clause"
     },
     "node_modules/levn": {
       "version": "0.4.1",
@@ -2636,7 +2631,6 @@
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -2698,7 +2692,6 @@
       "resolved": "https://registry.npmjs.org/react/-/react-18.2.0.tgz",
       "integrity": "sha512-/3IjMdb2L9QbBdWiW5e3P2/npwMBaU9mHCSCUzNln0ZCYbcfTsGbTJrU/kGemdH2IWmB2ioZ+zkxtmq6g09fGQ==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "loose-envify": "^1.1.0"
       },
@@ -2711,7 +2704,6 @@
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-18.2.0.tgz",
       "integrity": "sha512-6IMTriUmvsjHUjNtEDudZfuDQUoWXVxKHhlEGSk81n4YFS+r/Kl99wXiwlVXtPBtJenozv2P+hxDsw9eA7Xo6g==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "loose-envify": "^1.1.0",
         "scheduler": "^0.23.0"
@@ -3006,7 +2998,6 @@
       "integrity": "sha512-w+N7Hifpc3gRjZ63vYBXA56dvvRlNWRczTdmCBBa+CotUzAPf5b7YMdMR/8CQoeYE5LX3W4wj6RYTgonm1b9DA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "esbuild": "^0.27.0",
         "fdir": "^6.5.0",
@@ -3128,7 +3119,6 @@
       "integrity": "sha512-k7Nwx6vuWx1IJ9Bjuf4Zt1PEllcwe7cls3VNzm4CQ1/hgtFUK2bRNG3rvnpPUhFjmqJKAKtjV576KnUkHocg/g==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
diff --git a/src/App.css b/src/App.css
index 6002b7c..f1b0b1b 100644
--- a/src/App.css
+++ b/src/App.css
@@ -20,6 +20,12 @@
     padding: 40px 20px 80px;
 }
 
+@media (max-width: 768px) {
+    .site-main {
+        padding: 20px 16px 60px;
+    }
+}
+
 @keyframes fadeUp {
     from {
         opacity: 0;
diff --git a/src/components/Navbar.css b/src/components/Navbar.css
index 04b5753..30b50d7 100644
--- a/src/components/Navbar.css
+++ b/src/components/Navbar.css
@@ -91,3 +91,36 @@
         align-items: flex-start;
     }
 }
+
+@media (max-width: 768px) {
+    .site-nav__inner {
+        padding: 14px 16px;
+        gap: 12px;
+    }
+
+    .site-nav__brand {
+        gap: 10px;
+    }
+
+    .site-nav__logo-image {
+        width: 36px;
+        height: 36px;
+    }
+
+    .site-nav__title {
+        font-size: 14px;
+    }
+
+    .site-nav__subtitle {
+        font-size: 11px;
+    }
+
+    .site-nav__links {
+        gap: 8px;
+    }
+
+    .site-nav__link {
+        font-size: 13px;
+        padding: 6px 10px;
+    }
+}
diff --git a/src/index.css b/src/index.css
index e1cebe2..f7110dd 100644
--- a/src/index.css
+++ b/src/index.css
@@ -11,13 +11,21 @@ body {
 
 body {
     margin: 0;
-    background: radial-gradient(1000px 600px at 15% 5%, rgba(247, 168, 165, 0.25), transparent 60%),
-        radial-gradient(800px 600px at 85% 0%, rgba(253, 212, 177, 0.18), transparent 60%),
+    background: radial-gradient(2000px 1200px at 15% 5%, rgba(247, 168, 165, 0.25), transparent 70%),
+        radial-gradient(1600px 1200px at 85% 0%, rgba(253, 212, 177, 0.18), transparent 70%),
+        radial-gradient(1500px 800px at 50% 50%, rgba(151, 201, 170, 0.1), transparent 80%),
         #0f0d12;
+    background-attachment: fixed;
     color: var(--text);
     font-family: var(--font-body);
 }
 
+@media (max-width: 768px) {
+    body {
+        background-attachment: scroll;
+    }
+}
+
 a {
     color: inherit;
 }
diff --git a/src/pages/blog/Blog.css b/src/pages/blog/Blog.css
index f6d16f2..3bd5808 100644
--- a/src/pages/blog/Blog.css
+++ b/src/pages/blog/Blog.css
@@ -53,6 +53,29 @@
     align-items: start;
 }
 
+.blog-toggle-list {
+    display: none;
+    position: fixed;
+    top: 20px;
+    left: 20px;
+    z-index: 1000;
+    width: 40px;
+    height: 40px;
+    border-radius: 50%;
+    border: 1px solid var(--line);
+    background: rgba(10, 12, 20, 0.8);
+    color: var(--text);
+    font-size: 18px;
+    cursor: pointer;
+    backdrop-filter: blur(10px);
+    transition: transform 0.2s ease, opacity 0.2s ease;
+}
+
+.blog-toggle-list:hover {
+    transform: scale(1.1);
+    opacity: 0.9;
+}
+
 .blog-list {
     display: grid;
     gap: 12px;
@@ -184,7 +207,10 @@
 
 .blog-article__body h1,
 .blog-article__body h2,
-.blog-article__body h3 {
+.blog-article__body h3,
+.blog-article__body h4,
+.blog-article__body h5,
+.blog-article__body h6 {
     font-family: var(--font-display);
     margin: 22px 0 10px;
 }
@@ -201,6 +227,18 @@
     font-size: 20px;
 }
 
+.blog-article__body h4 {
+    font-size: 18px;
+}
+
+.blog-article__body h5 {
+    font-size: 16px;
+}
+
+.blog-article__body h6 {
+    font-size: 14px;
+}
+
 .md-paragraph {
     margin: 0 0 14px;
     color: var(--muted);
@@ -220,6 +258,11 @@
     font-size: 0.85em;
 }
 
+.blog-article__body del {
+    text-decoration: line-through;
+    opacity: 0.7;
+}
+
 .blog-article__body a {
     color: #f7d4c9;
 }
@@ -325,4 +368,104 @@
     .blog-grid {
         grid-template-columns: 1fr;
     }
+
+    .blog-toggle-list {
+        display: block;
+    }
+
+    .blog-list {
+        display: none;
+    }
+
+    .blog-list.is-visible {
+        display: block;
+        position: fixed;
+        top: 0;
+        left: 0;
+        width: 100%;
+        height: 100%;
+        background: rgba(6, 8, 12, 0.7);
+        z-index: 999;
+        padding: 80px 20px 20px;
+        overflow-y: auto;
+        backdrop-filter: blur(10px);
+        display: flex;
+        flex-direction: column;
+        gap: 16px;
+    }
+
+    .blog-list.is-visible .blog-category-filter {
+        margin-bottom: 8px;
+    }
+
+    .blog-list.is-visible .blog-pagination {
+        margin-top: 8px;
+    }
+
+    .blog-article {
+        width: 100%;
+    }
+}
+
+@media (max-width: 768px) {
+    .blog-header h1 {
+        font-size: clamp(24px, 6vw, 32px);
+    }
+
+    .blog-grid {
+        gap: 18px;
+    }
+
+    .blog-list {
+        gap: 10px;
+    }
+
+    .blog-list__item {
+        padding: 14px;
+    }
+
+    .blog-list__title {
+        font-size: 15px;
+    }
+
+    .blog-list__excerpt {
+        font-size: 12px;
+    }
+
+    .blog-article {
+        padding: 18px;
+    }
+
+    .blog-article__body h1 {
+        font-size: 24px;
+    }
+
+    .blog-article__body h2 {
+        font-size: 20px;
+    }
+
+    .blog-article__body h3 {
+        font-size: 18px;
+    }
+
+    .blog-article__body h4 {
+        font-size: 16px;
+    }
+
+    .blog-article__body h5 {
+        font-size: 14px;
+    }
+
+    .blog-article__body h6 {
+        font-size: 12px;
+    }
+
+    .blog-categories__grid {
+        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+        gap: 14px;
+    }
+
+    .blog-category-card {
+        padding: 16px;
+    }
 }
diff --git a/src/pages/blog/Blog.jsx b/src/pages/blog/Blog.jsx
index 7651ce8..70b77f4 100644
--- a/src/pages/blog/Blog.jsx
+++ b/src/pages/blog/Blog.jsx
@@ -5,7 +5,7 @@ import './Blog.css';
 const renderInline = (text) => {
     const normalized = text.replace(/<br\s*\/?>/gi, '\n');
     const pattern =
-        /(!\[[^\]]*\]\([^)]+\)|\[[^\]]+\]\([^)]+\)|\*\*[^*]+\*\*|\*[^*]+\*|`[^`]+`)/g;
+        /(!\[[^\]]*\]\([^)]+\)|\[[^\]]+\]\([^)]+\)|\*\*[^*]+\*\*|\*[^*]+\*|~~[^~]+~~|`[^`]+`)/g;
     const segments = normalized.split('\n');
 
     return segments.flatMap((segment, segmentIndex) => {
@@ -48,6 +48,9 @@ const renderInline = (text) => {
             if (part.startsWith('*')) {
                 return <em key={`${part}-${index}`}>{part.replace(/\*/g, '')}</em>;
             }
+            if (part.startsWith('~~')) {
+                return <del key={`${part}-${index}`}>{part.replace(/~~/g, '')}</del>;
+            }
             if (part.startsWith('`')) {
                 return <code key={`${part}-${index}`}>{part.replace(/`/g, '')}</code>;
             }
@@ -123,6 +126,18 @@ const renderMarkdown = (body) => {
             return;
         }
 
+        if (line.startsWith('###### ')) {
+            blocks.push({ type: 'h6', value: line.replace(/^######\s+/, '') });
+            return;
+        }
+        if (line.startsWith('##### ')) {
+            blocks.push({ type: 'h5', value: line.replace(/^#####\s+/, '') });
+            return;
+        }
+        if (line.startsWith('#### ')) {
+            blocks.push({ type: 'h4', value: line.replace(/^####\s+/, '') });
+            return;
+        }
         if (line.startsWith('### ')) {
             blocks.push({ type: 'h3', value: line.replace(/^###\s+/, '') });
             return;
@@ -146,6 +161,9 @@ const renderMarkdown = (body) => {
         if (block.type === 'h1') return <h1 key={index}>{block.value}</h1>;
         if (block.type === 'h2') return <h2 key={index}>{block.value}</h2>;
         if (block.type === 'h3') return <h3 key={index}>{block.value}</h3>;
+        if (block.type === 'h4') return <h4 key={index}>{block.value}</h4>;
+        if (block.type === 'h5') return <h5 key={index}>{block.value}</h5>;
+        if (block.type === 'h6') return <h6 key={index}>{block.value}</h6>;
         if (block.type === 'list')
             return (
                 <ul key={index}>
@@ -202,6 +220,7 @@ const Blog = () => {
 
     const [selectedCategory, setSelectedCategory] = useState('전체');
     const [page, setPage] = useState(1);
+    const [showList, setShowList] = useState(false);
     const pageSize = 10;
     const filteredPosts = useMemo(() => {
         if (selectedCategory === '전체') return posts;
@@ -250,7 +269,15 @@ const Blog = () => {
             </header>
 
             <div className="blog-grid">
-                <aside className="blog-list">
+                <button
+                    type="button"
+                    className="blog-toggle-list"
+                    onClick={() => setShowList((prev) => !prev)}
+                    aria-label="글 목록 토글"
+                >
+                    ☰
+                </button>
+                <aside className={`blog-list ${showList ? 'is-visible' : ''}`}>
                     <div className="blog-category-filter">
                         {['전체', ...categoryNames, '기타'].map((name) => (
                             <button
@@ -272,7 +299,10 @@ const Blog = () => {
                             className={`blog-list__item${
                                 post.slug === activeSlug ? ' is-active' : ''
                             }`}
-                            onClick={() => setActiveSlug(post.slug)}
+                            onClick={() => {
+                                setActiveSlug(post.slug);
+                                setShowList(false); // 모바일에서 글 선택 시 리스트 숨김
+                            }}
                         >
                             <p className="blog-list__title">{post.title}</p>
                             <p className="blog-list__excerpt">{post.excerpt}</p>
diff --git a/src/pages/home/Home.css b/src/pages/home/Home.css
index 81ff552..8a9ff32 100644
--- a/src/pages/home/Home.css
+++ b/src/pages/home/Home.css
@@ -308,3 +308,51 @@
         grid-template-columns: 1fr;
     }
 }
+
+@media (max-width: 768px) {
+    .home-hero h1 {
+        font-size: clamp(24px, 6vw, 36px);
+    }
+
+    .home-grid {
+        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
+        gap: 12px;
+    }
+
+    .home-card {
+        padding: 14px;
+        gap: 12px;
+    }
+
+    .home-card__title {
+        font-size: 16px;
+    }
+
+    .home-card__desc {
+        font-size: 13px;
+    }
+
+    .home-posts {
+        gap: 10px;
+    }
+
+    .home-post {
+        padding: 14px 16px;
+    }
+
+    .home-post__title {
+        font-size: 16px;
+    }
+
+    .home-profile__card {
+        padding: 18px;
+    }
+
+    .home-profile__name {
+        font-size: 16px;
+    }
+
+    .home-profile__bio {
+        font-size: 14px;
+    }
+}
diff --git a/src/pages/home/Home.jsx b/src/pages/home/Home.jsx
index 2299ac8..d173007 100644
--- a/src/pages/home/Home.jsx
+++ b/src/pages/home/Home.jsx
@@ -16,8 +16,7 @@ const Home = () => {
                     <p className="home-hero__kicker">Personal Archive</p>
                     <h1>기록을 모으고, 이야기를 이어붙이는 작은 집.</h1>
                     <p className="home-hero__lead">
-                        개발 실험, 여행 스냅, 그리고 생각을 모아두는 공간입니다. 블로그 글은
-                        마크다운으로 작성해 계속 추가할 수 있어요.
+                        개발, 여행 스냅, 그리고 생각을 모아두는 공간입니다.
                     </p>
                     <div className="home-hero__actions">
                         <Link className="button primary" to="/blog">
diff --git a/src/pages/lotto/Lotto.css b/src/pages/lotto/Lotto.css
index faf4b06..72582cc 100644
--- a/src/pages/lotto/Lotto.css
+++ b/src/pages/lotto/Lotto.css
@@ -337,3 +337,43 @@
         grid-template-columns: 1fr;
     }
 }
+
+@media (max-width: 768px) {
+    .lotto-header h1 {
+        font-size: clamp(24px, 6vw, 32px);
+    }
+
+    .lotto-grid {
+        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+        gap: 14px;
+    }
+
+    .lotto-panel {
+        padding: 16px;
+    }
+
+    .lotto-panel__head {
+        flex-direction: column;
+        align-items: flex-start;
+        gap: 10px;
+    }
+
+    .lotto-row {
+        gap: 6px;
+    }
+
+    .lotto-ball {
+        width: 36px;
+        height: 36px;
+        font-size: 14px;
+    }
+
+    .lotto-meta__title {
+        font-size: 16px;
+    }
+
+    .lotto-history__item {
+        padding: 14px;
+        gap: 12px;
+    }
+}
diff --git a/src/pages/travel/Travel.css b/src/pages/travel/Travel.css
index 0387796..47d273d 100644
--- a/src/pages/travel/Travel.css
+++ b/src/pages/travel/Travel.css
@@ -24,6 +24,12 @@
     font-size: clamp(30px, 4vw, 40px);
 }
 
+@media (max-width: 768px) {
+    .travel-header h1 {
+        font-size: clamp(24px, 6vw, 32px);
+    }
+}
+
 .travel-sub {
     margin: 0;
     color: var(--muted);
@@ -52,6 +58,13 @@
     gap: 18px;
 }
 
+@media (max-width: 768px) {
+    .travel-grid {
+        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
+        gap: 12px;
+    }
+}
+
 .travel-albums {
     display: grid;
     gap: 24px;
@@ -80,6 +93,12 @@
     background: rgba(10, 12, 20, 0.6);
 }
 
+@media (max-width: 768px) {
+    .travel-map__canvas {
+        min-height: 300px;
+    }
+}
+
 .travel-map__info {
     width: 100%;
     border: 1px solid rgba(255, 255, 255, 0.2);
@@ -189,6 +208,12 @@
     cursor: pointer;
 }
 
+@media (max-width: 768px) {
+    .travel-card {
+        min-height: 150px;
+    }
+}
+
 .travel-card.is-wide {
     grid-column: span 2;
 }
@@ -352,6 +377,14 @@
     cursor: pointer;
 }
 
+@media (max-width: 768px) {
+    .travel-modal__arrow {
+        width: 48px;
+        height: 48px;
+        font-size: 28px;
+    }
+}
+
 .travel-card__meta {
     margin: 0;
     font-size: 12px;
diff --git a/src/pages/travel/Travel.jsx b/src/pages/travel/Travel.jsx
index 3dc199f..d4bbef0 100644
--- a/src/pages/travel/Travel.jsx
+++ b/src/pages/travel/Travel.jsx
@@ -169,6 +169,7 @@ const Travel = () => {
     const [regionsGeojson, setRegionsGeojson] = useState(null);
     const [selectedPhotoIndex, setSelectedPhotoIndex] = useState(null);
     const [modalOffset, setModalOffset] = useState(24);
+    const [touchStartX, setTouchStartX] = useState(null);
     const cacheRef = useRef(new Map());
     const cacheTtlMs = 10 * 60 * 1000;
 
@@ -292,8 +293,42 @@ const Travel = () => {
             }
         };
 
+        const handleTouchStart = (event) => {
+            if (selectedPhotoIndex === null) return;
+            const touch = event.touches[0];
+            setTouchStartX(touch.clientX);
+        };
+
+        const handleTouchEnd = (event) => {
+            if (selectedPhotoIndex === null || touchStartX === null) return;
+            const touch = event.changedTouches[0];
+            const deltaX = touch.clientX - touchStartX;
+            if (Math.abs(deltaX) > 50) { // 스와이프 거리 임계값
+                if (deltaX > 0) {
+                    // 왼쪽으로 스와이프: 이전 사진
+                    setSelectedPhotoIndex((prev) =>
+                        prev === null
+                            ? prev
+                            : (prev - 1 + photos.length) % photos.length
+                    );
+                } else {
+                    // 오른쪽으로 스와이프: 다음 사진
+                    setSelectedPhotoIndex((prev) =>
+                        prev === null ? prev : (prev + 1) % photos.length
+                    );
+                }
+            }
+            setTouchStartX(null);
+        };
+
         window.addEventListener('keydown', handleKeyDown);
-        return () => window.removeEventListener('keydown', handleKeyDown);
+        window.addEventListener('touchstart', handleTouchStart);
+        window.addEventListener('touchend', handleTouchEnd);
+        return () => {
+            window.removeEventListener('keydown', handleKeyDown);
+            window.removeEventListener('touchstart', handleTouchStart);
+            window.removeEventListener('touchend', handleTouchEnd);
+        };
     }, [photos.length, selectedPhotoIndex]);
 
     useEffect(() => {