# Orbit｜大会预告
从字形构造进入完整标题，再把标题退到背景，让日期和网址成为真正可用的信息。
```motion-demo
{
"id": "sequence",
"title": "整体编排",
"src": "demos/sequence.html",
"duration": 28.583333,
"status": "authored",
"description": "动作与构图示意",
"initialTime": 8,
"params": [
{
"key": "title",
"label": "示例主文案",
"type": "text",
"value": "Orbit",
"maxLength": 60
},
{
"key": "accent",
"label": "强调色",
"type": "color",
"value": "#777873"
}
],
"presets": [
{
"label": "默认内容",
"values": {
"title": "Orbit",
"accent": "#777873"
}
},
{
"label": "OpenDesign 改编",
"values": {
"title": "OpenDesign",
"accent": "#7050da"
}
}
]
}
```
## 细节逐渐组成可读字标
纸面细线和圆弧从局部展开，字形轮廓逐步完整。构造线服务于字母形状，轮廓闭合后再填成实心标题；不是仅把同一张字图放大缩小。
## 标题完成后主动退后
完整字标稳定停留，再虚化为背景。日期和网址进入清楚的前景，文字对齐与位置保持简单；从艺术化字形转向实用信息时明显减少运动。
## 纸面灰阶与精细字形
浅灰纸感、深色字标和弱辅助线形成细腻层级。主字标用有构造感的无衬线，日期网址用简洁小号无衬线；背景纹理保持低对比，不能干扰轮廓和信息。
## 换活动名时重新考虑字形构造
适合短活动名或产品名。根据新字母安排圆弧、直线与轮廓的揭示顺序，同时替换日期和网址；实用信息至少获得一次静止、清楚的阅读停留。
## 配色与字形
无衬线中粗主标题；细边框界面与小号功能文字。
#e3e3de · #151613 · #777873 · #b9b9b2 · #ffffff
## 元素与制作规则
纸面纹理 / 辅助线 / 字形轮廓 / 实心字标 / 活动信息
- 从字形构造细节拉开到可读标题，再把标题虚化为背景，前景显示日期与网址。
- 线稿到实心是信息揭示，不能只做整体缩放。
## 内容替换
- 可换活动名；保持字形细节→完整识别→实用信息。
## 制作参数
[视觉与对象](style.json) · [段落时序](timeline.json) · [位置数据](tracks.json) · [文件清单](manifest.json)
此规范根据参考视频整理。HTML 为可编辑的编排示例；具体数据的来源、精度与有效区间随文件标注。
```motion-board
{
"version": 1,
"brand": "Linear",
"id": "V111",
"palette": [
"#e3e3de",
"#151613",
"#777873",
"#b9b9b2",
"#ffffff"
],
"typography": "无衬线中粗主标题；细边框界面与小号功能文字",
"sample": "Orbit",
"objects": [
"纸面纹理",
"辅助线",
"字形轮廓",
"实心字标",
"活动信息"
],
"frames": [
{
"path": "assets/reference-1.webp",
"timeSeconds": 0.0,
"frameId": "K0001",
"role": "reference-evidence",
"status": "measured"
},
{
"path": "assets/reference-2.webp",
"timeSeconds": 3.0,
"frameId": "K0013",
"role": "reference-evidence",
"status": "measured"
},
{
"path": "assets/reference-3.webp",
"timeSeconds": 14.0,
"frameId": "K0048",
"role": "reference-evidence",
"status": "measured"
},
{
"path": "https://r.open-design.ai/files/df6f6d40b0fe218f5b756ea753d5c56f46aa02d8089f1c7cdb05a91038140861",
"timeSeconds": 17.0,
"frameId": "K0060",
"role": "reference-evidence",
"status": "measured"
},
{
"path": "assets/reference-5.webp",
"timeSeconds": 23.0,
"frameId": "K0074",
"role": "reference-evidence",
"status": "measured"
},
{
"path": "assets/reference-6.webp",
"timeSeconds": 25.0,
"frameId": "K0076",
"role": "reference-evidence",
"status": "measured"
}
],
"stages": [
{
"start": 0,
"label": "纸面细线",
"end": 3,
"status": "inferred",
"basis": "Representative-frame review; approximate boundaries"
},
{
"start": 3,
"label": "圆弧构造",
"end": 8,
"status": "inferred",
"basis": "Representative-frame review; approximate boundaries"
},
{
"start": 8,
"label": "字形局部",
"end": 14,
"status": "inferred",
"basis": "Representative-frame review; approximate boundaries"
},
{
"start": 14,
"label": "完整轮廓",
"end": 17,
"status": "inferred",
"basis": "Representative-frame review; approximate boundaries"
},
{
"start": 17,
"label": "实心标题",
"end": 21,
"status": "inferred",
"basis": "Representative-frame review; approximate boundaries"
},
{
"start": 21,
"label": "标题虚化",
"end": 23,
"status": "inferred",
"basis": "Representative-frame review; approximate boundaries"
},
{
"start": 23,
"label": "日期",
"end": 25,
"status": "inferred",
"basis": "Representative-frame review; approximate boundaries"
},
{
"start": 25,
"label": "网址",
"end": 28.583333,
"status": "inferred",
"basis": "Representative-frame review; approximate boundaries"
}
],
"duration": 28.583333,
"fontFamily": "Arial, sans-serif"
}
```
