diff --git a/index.html b/index.html
index b93cd88..4ada352 100644
--- a/index.html
+++ b/index.html
@@ -587,6 +587,7 @@
         <ul class="nav-links">
             <li><a href="services.html">Services</a></li>
             <li><a href="works.html">Works</a></li>
+            <li><a href="timeline.html">Timeline</a></li>
             <li><a href="#about">About</a></li>
             <li><a href="#contact">Contact</a></li>
         </ul>
diff --git a/services.html b/services.html
index 9a4ebbf..c34d4b1 100644
--- a/services.html
+++ b/services.html
@@ -422,6 +422,7 @@
         <ul class="nav-links">
             <li><a href="services.html" class="active">Services</a></li>
             <li><a href="works.html">Works</a></li>
+            <li><a href="timeline.html">Timeline</a></li>
             <li><a href="index.html#about">About</a></li>
             <li><a href="index.html#contact">Contact</a></li>
         </ul>
diff --git a/timeline.html b/timeline.html
new file mode 100644
index 0000000..915caff
--- /dev/null
+++ b/timeline.html
@@ -0,0 +1,555 @@
+<!DOCTYPE html>
+<html lang="zh-Hant">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Timeline — Studio Sample</title>
+    <style>
+        * {
+            box-sizing: border-box;
+            margin: 0;
+            padding: 0;
+        }
+
+        html {
+            scroll-behavior: smooth;
+        }
+
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
+                         "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP",
+                         "Noto Sans TC", system-ui, sans-serif;
+            background-color: #ffffff;
+            color: #333333;
+            line-height: 1.6;
+        }
+
+        /* ─── NAV ─────────────────────────────────────────────── */
+        nav {
+            position: sticky;
+            top: 0;
+            z-index: 100;
+            background: #ffffff;
+            border-bottom: 1px solid #eeeeee;
+            display: flex;
+            align-items: center;
+            justify-content: space-between;
+            padding: 0 clamp(16px, 5vw, 64px);
+            height: 56px;
+        }
+
+        .nav-logo {
+            font-size: 18px;
+            font-weight: 800;
+            letter-spacing: 0.12em;
+            color: #e53935;
+            text-transform: uppercase;
+            text-decoration: none;
+        }
+
+        .nav-links {
+            display: flex;
+            gap: clamp(16px, 3vw, 40px);
+            list-style: none;
+        }
+
+        .nav-links a {
+            font-size: 13px;
+            font-weight: 600;
+            letter-spacing: 0.08em;
+            text-transform: uppercase;
+            color: #555555;
+            text-decoration: none;
+            transition: color 0.2s;
+        }
+
+        .nav-links a:hover,
+        .nav-links a.active {
+            color: #e53935;
+        }
+
+        /* ─── PAGE HEADER ─────────────────────────────────────── */
+        .page-header {
+            background: #f7f7f7;
+            padding: clamp(48px, 8vw, 96px) clamp(24px, 8vw, 96px);
+            border-bottom: 1px solid #eeeeee;
+        }
+
+        .page-header-label {
+            font-size: 11px;
+            font-weight: 700;
+            letter-spacing: 0.2em;
+            text-transform: uppercase;
+            color: #e53935;
+            margin-bottom: 12px;
+        }
+
+        .page-header-title {
+            font-size: clamp(36px, 6vw, 72px);
+            font-weight: 800;
+            letter-spacing: -0.02em;
+            line-height: 1.05;
+            color: #111111;
+        }
+
+        .page-header-sub {
+            margin-top: 16px;
+            font-size: clamp(14px, 1.5vw, 16px);
+            color: #777777;
+            max-width: 480px;
+        }
+
+        /* ─── TIMELINE WRAPPER ────────────────────────────────── */
+        .timeline-section {
+            padding: clamp(64px, 10vw, 120px) clamp(24px, 8vw, 96px);
+        }
+
+        .timeline {
+            position: relative;
+            max-width: 860px;
+            margin: 0 auto;
+        }
+
+        /* vertical line */
+        .timeline::before {
+            content: '';
+            position: absolute;
+            left: 140px;
+            top: 8px;
+            bottom: 8px;
+            width: 1px;
+            background: #e0e0e0;
+        }
+
+        /* ─── YEAR GROUP ──────────────────────────────────────── */
+        .timeline-year {
+            margin-bottom: 56px;
+        }
+
+        .timeline-year-label {
+            font-size: 11px;
+            font-weight: 700;
+            letter-spacing: 0.2em;
+            text-transform: uppercase;
+            color: #bbbbbb;
+            width: 120px;
+            text-align: right;
+            padding-top: 4px;
+            padding-right: 0;
+            margin-bottom: 24px;
+            padding-left: 0;
+        }
+
+        /* ─── SINGLE EVENT ────────────────────────────────────── */
+        .timeline-item {
+            display: grid;
+            grid-template-columns: 120px 1fr;
+            gap: 0 40px;
+            position: relative;
+            margin-bottom: 36px;
+        }
+
+        .timeline-item:last-child {
+            margin-bottom: 0;
+        }
+
+        /* date column */
+        .timeline-date {
+            text-align: right;
+            padding-top: 2px;
+        }
+
+        .timeline-date-month {
+            font-size: 11px;
+            font-weight: 700;
+            letter-spacing: 0.12em;
+            text-transform: uppercase;
+            color: #aaaaaa;
+        }
+
+        .timeline-date-day {
+            font-size: 22px;
+            font-weight: 800;
+            color: #dddddd;
+            line-height: 1;
+            margin-top: 2px;
+        }
+
+        /* dot */
+        .timeline-item::after {
+            content: '';
+            position: absolute;
+            left: 134px;
+            top: 6px;
+            width: 13px;
+            height: 13px;
+            border-radius: 50%;
+            background: #ffffff;
+            border: 2px solid #cccccc;
+            transition: border-color 0.2s, background 0.2s;
+        }
+
+        .timeline-item.highlight::after {
+            background: #e53935;
+            border-color: #e53935;
+        }
+
+        /* content column */
+        .timeline-content {
+            padding-left: 20px;
+            padding-bottom: 36px;
+            border-bottom: 1px solid #f2f2f2;
+        }
+
+        .timeline-item:last-child .timeline-content {
+            border-bottom: none;
+            padding-bottom: 0;
+        }
+
+        .timeline-tag {
+            display: inline-block;
+            font-size: 10px;
+            font-weight: 700;
+            letter-spacing: 0.15em;
+            text-transform: uppercase;
+            color: #e53935;
+            background: #fdecea;
+            border-radius: 2px;
+            padding: 2px 7px;
+            margin-bottom: 8px;
+        }
+
+        .timeline-tag.tag-launch  { color: #1976d2; background: #e3f2fd; }
+        .timeline-tag.tag-award   { color: #388e3c; background: #e8f5e9; }
+        .timeline-tag.tag-collab  { color: #7b1fa2; background: #f3e5f5; }
+        .timeline-tag.tag-studio  { color: #e53935; background: #fdecea; }
+        .timeline-tag.tag-article { color: #f57c00; background: #fff3e0; }
+
+        .timeline-title {
+            font-size: clamp(15px, 2vw, 17px);
+            font-weight: 700;
+            color: #111111;
+            line-height: 1.35;
+            margin-bottom: 6px;
+        }
+
+        .timeline-desc {
+            font-size: 14px;
+            color: #666666;
+            line-height: 1.7;
+        }
+
+        .timeline-desc span {
+            display: block;
+            color: #999999;
+            margin-top: 2px;
+            font-size: 13px;
+        }
+
+        /* ─── FOOTER ──────────────────────────────────────────── */
+        footer {
+            background: #111111;
+            color: #aaaaaa;
+            padding: clamp(32px, 6vw, 56px) clamp(24px, 8vw, 96px);
+            display: flex;
+            flex-wrap: wrap;
+            align-items: center;
+            justify-content: space-between;
+            gap: 16px;
+        }
+
+        .footer-nav {
+            display: flex;
+            gap: clamp(16px, 3vw, 32px);
+            list-style: none;
+        }
+
+        .footer-nav a {
+            font-size: 12px;
+            font-weight: 600;
+            letter-spacing: 0.08em;
+            text-transform: uppercase;
+            color: #555555;
+            text-decoration: none;
+            transition: color 0.2s;
+        }
+
+        .footer-nav a:hover {
+            color: #e53935;
+        }
+
+        .footer-logo {
+            font-size: 16px;
+            font-weight: 800;
+            letter-spacing: 0.12em;
+            color: #e53935;
+            text-transform: uppercase;
+        }
+
+        .footer-copy {
+            font-size: 12px;
+            color: #555555;
+            letter-spacing: 0.05em;
+        }
+
+        /* ─── RESPONSIVE ──────────────────────────────────────── */
+        @media (max-width: 600px) {
+            .timeline::before {
+                left: 0;
+            }
+
+            .timeline-item {
+                grid-template-columns: 1fr;
+                gap: 4px 0;
+                padding-left: 22px;
+            }
+
+            .timeline-item::after {
+                left: -6px;
+                top: 4px;
+            }
+
+            .timeline-date {
+                text-align: left;
+                display: flex;
+                align-items: baseline;
+                gap: 8px;
+            }
+
+            .timeline-date-day {
+                font-size: 14px;
+                color: #cccccc;
+            }
+
+            .timeline-content {
+                padding-left: 0;
+            }
+
+            .timeline-year-label {
+                width: auto;
+                text-align: left;
+                padding-left: 22px;
+            }
+        }
+    </style>
+</head>
+<body>
+
+    <!-- ─── NAV ─────────────────────────────────────────────── -->
+    <nav>
+        <a class="nav-logo" href="index.html">Studio Sample</a>
+        <ul class="nav-links">
+            <li><a href="services.html">Services</a></li>
+            <li><a href="works.html">Works</a></li>
+            <li><a href="timeline.html" class="active">Timeline</a></li>
+            <li><a href="index.html#about">About</a></li>
+            <li><a href="index.html#contact">Contact</a></li>
+        </ul>
+    </nav>
+
+    <!-- ─── PAGE HEADER ───────────────────────────────────────── -->
+    <header class="page-header">
+        <p class="page-header-label">Studio History</p>
+        <h1 class="page-header-title">Our<br>Timeline.</h1>
+        <p class="page-header-sub">
+            工作室從 2020 年創立至今的重要時刻。<br>
+            Key milestones from founding to now.
+        </p>
+    </header>
+
+    <!-- ─── TIMELINE ──────────────────────────────────────────── -->
+    <section class="timeline-section">
+        <div class="timeline">
+
+            <!-- 2026 -->
+            <div class="timeline-year">
+                <p class="timeline-year-label">2026</p>
+
+                <div class="timeline-item highlight">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Mar</div>
+                        <div class="timeline-date-day">18</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-launch">Launch</span>
+                        <h2 class="timeline-title">Redline Co. 品牌全面更新上線</h2>
+                        <p class="timeline-desc">
+                            歷時三個月的品牌再造計畫正式交付，涵蓋新識別系統、色彩規範與全站前端重建。
+                            <span>Three-month rebrand: new identity system, colour guidelines, full front-end rebuild.</span>
+                        </p>
+                    </div>
+                </div>
+
+                <div class="timeline-item">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Feb</div>
+                        <div class="timeline-date-day">03</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-article">Article</span>
+                        <h2 class="timeline-title">發表文章：為什麼我們不用任何前端框架</h2>
+                        <p class="timeline-desc">
+                            整理五年來不依賴框架交付高品質網站的核心原則，在設計社群引發討論。
+                            <span>Published our philosophy on framework-free front-end development — sparked wide discussion.</span>
+                        </p>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 2025 -->
+            <div class="timeline-year">
+                <p class="timeline-year-label">2025</p>
+
+                <div class="timeline-item highlight">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Nov</div>
+                        <div class="timeline-date-day">22</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-award">Award</span>
+                        <h2 class="timeline-title">Tokyo Design Award — Print 類別銀獎</h2>
+                        <p class="timeline-desc">
+                            以「Mono Press」年刊設計獲頒東京設計獎印刷類銀獎，為工作室首個正式設計獎項。
+                            <span>Silver award at Tokyo Design Award (Print) for the "Mono Press" annual publication.</span>
+                        </p>
+                    </div>
+                </div>
+
+                <div class="timeline-item">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Aug</div>
+                        <div class="timeline-date-day">14</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-collab">Collab</span>
+                        <h2 class="timeline-title">與 Koto Studio 展開合作計畫</h2>
+                        <p class="timeline-desc">
+                            與倫敦品牌顧問公司 Koto Studio 建立合作關係，共同服務在亞洲市場拓展的歐洲客戶。
+                            <span>Partnership with London-based Koto Studio to serve European clients expanding into Asia.</span>
+                        </p>
+                    </div>
+                </div>
+
+                <div class="timeline-item">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Jan</div>
+                        <div class="timeline-date-day">07</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-studio">Studio</span>
+                        <h2 class="timeline-title">搬遷至澀谷新工作室</h2>
+                        <p class="timeline-desc">
+                            工作室從代官山搬遷至澀谷，面積增加一倍，新增客戶簡報空間與攝影區。
+                            <span>Moved from Daikanyama to a larger Shibuya studio with dedicated client briefing and photo area.</span>
+                        </p>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 2024 -->
+            <div class="timeline-year">
+                <p class="timeline-year-label">2024</p>
+
+                <div class="timeline-item highlight">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Sep</div>
+                        <div class="timeline-date-day">30</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-launch">Launch</span>
+                        <h2 class="timeline-title">第 50 個專案里程碑</h2>
+                        <p class="timeline-desc">
+                            完成第 50 個交付專案，橫跨品牌識別、網站建置與印刷品設計三個主要服務領域。
+                            <span>Delivered our 50th project across branding, web, and print — a four-year milestone.</span>
+                        </p>
+                    </div>
+                </div>
+
+                <div class="timeline-item">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Apr</div>
+                        <div class="timeline-date-day">01</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-studio">Studio</span>
+                        <h2 class="timeline-title">新成員 Yuki 加入工作室</h2>
+                        <p class="timeline-desc">
+                            視覺設計師 Yuki Nakamura 正式加入，工作室核心成員擴充至三人。
+                            <span>Visual designer Yuki Nakamura joined — expanding the core team to three.</span>
+                        </p>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 2022 -->
+            <div class="timeline-year">
+                <p class="timeline-year-label">2022</p>
+
+                <div class="timeline-item">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Jun</div>
+                        <div class="timeline-date-day">15</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-launch">Launch</span>
+                        <h2 class="timeline-title">推出服務套餐制定價</h2>
+                        <p class="timeline-desc">
+                            為了讓中小型品牌更容易進入，正式推出 Starter、Studio、Enterprise 三級套餐定價。
+                            <span>Launched tiered service packages (Starter / Studio / Enterprise) for clearer client access.</span>
+                        </p>
+                    </div>
+                </div>
+
+                <div class="timeline-item">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Feb</div>
+                        <div class="timeline-date-day">28</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-collab">Collab</span>
+                        <h2 class="timeline-title">首個海外客戶：臺灣 Nori Coffee</h2>
+                        <p class="timeline-desc">
+                            完成臺北精品咖啡品牌 Nori Coffee 的全套視覺識別設計，開啟工作室海外合作的第一頁。
+                            <span>First overseas client — complete visual identity for Nori Coffee, Taipei.</span>
+                        </p>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 2020 -->
+            <div class="timeline-year">
+                <p class="timeline-year-label">2020</p>
+
+                <div class="timeline-item highlight">
+                    <div class="timeline-date">
+                        <div class="timeline-date-month">Apr</div>
+                        <div class="timeline-date-day">01</div>
+                    </div>
+                    <div class="timeline-content">
+                        <span class="timeline-tag tag-studio">Studio</span>
+                        <h2 class="timeline-title">Studio Sample 正式成立</h2>
+                        <p class="timeline-desc">
+                            由設計師 Hiro 與前端工程師 Sato 共同在東京代官山創立，以「無框架、無廢話」為核心理念。
+                            <span>Founded in Daikanyama, Tokyo by designer Hiro and engineer Sato — "no frameworks, no fluff."</span>
+                        </p>
+                    </div>
+                </div>
+            </div>
+
+        </div>
+    </section>
+
+    <!-- ─── FOOTER ─────────────────────────────────────────────── -->
+    <footer>
+        <div class="footer-logo">Studio Sample</div>
+        <ul class="footer-nav">
+            <li><a href="services.html">Services</a></li>
+            <li><a href="works.html">Works</a></li>
+            <li><a href="timeline.html">Timeline</a></li>
+            <li><a href="index.html#contact">Contact</a></li>
+        </ul>
+        <div class="footer-copy">© 2026 Studio Sample. All rights reserved.</div>
+    </footer>
+
+</body>
+</html>
diff --git a/works.html b/works.html
index 39aedbc..cb0ae5f 100644
--- a/works.html
+++ b/works.html
@@ -322,6 +322,7 @@
         <ul class="nav-links">
             <li><a href="services.html">Services</a></li>
             <li><a href="works.html" class="active">Works</a></li>
+            <li><a href="timeline.html">Timeline</a></li>
             <li><a href="index.html#about">About</a></li>
             <li><a href="index.html#contact">Contact</a></li>
         </ul>
