The ovoo is the steppe's architecture — a heap of stones, bleached wood, and sky-blue khadag scarves piled where mountain passes touch heaven. Travelers add a stone, circle three times clockwise, pour a libation. There are no walls, no roofs, only cairns at the high places and an enormous low sky pressing down on everything.
This design system translates that austere verticality into interface language: deep steppe-sky blue grounds, bone-white type carved like weather-patient stone, and silk-blue accents that flutter across compositions like prayer scarves caught in the wind.
敖包是草原上唯一的建筑——石堆、风化的白木、天蓝色哈达丝巾，堆在每一个山口、每一处天与地交接的高地。旅人添一块石头，顺时针绕行三圈，洒一捧奶酒。没有墙壁，没有屋顶，只有石头垒在高处，头顶是压得极低的苍穹。
这套设计体系将草原的肃穆垂直感转化为界面语言：以深邃的腾格里蓝天为底色，以骨白色衬线字体刻写如风蚀的碑石，以丝绸蓝点缀其间——像哈达在风中猎猎作响。