Create a four-page interior design proposal series titled “Sunlit Tuscan Residence”. Design a contemporary Tuscan living room for a real private home. The space should feel sun-washed, warm, architectural, earthy and refined, with large arched openings, lime-plaster walls, travertine, dark walnut, natural linen, aged leather, blackened iron, handmade ceramics, terracotta accents, olive green and soft afternoon light. Avoid farmhouse styling, rustic inns, vacation rentals, coastal décor, distressed wood, vintage clutter and all-beige minimalism. Use a professional editorial presentation style with a warm limestone-gray background, terracotta page-number blocks, dark olive divider lines, elegant serif titles, clean sans-serif labels and a few restrained handwritten notes. Keep the same visual identity across all four vertical 4:5 boards. 01 / Spatial Concept: show a large panoramic living room with arches, courtyard views, linen sofa, terracotta lounge chair, leather accent chair, travertine coffee table, walnut storage, olive tree and strong sunlight shadows. Add concise material, palette and key-piece sections. 02 / Architecture & Living Flow: show an axonometric breakdown of the arches, sunlight direction, lime-plaster walls, travertine fireplace, walnut storage, seating zone, reading corner, textile layer, collected objects and indoor–outdoor flow. Include a small floor plan, sun-path diagram and circulation analysis. 03 / Furniture & Collected Objects: create an asymmetric editorial selection page with a linen sofa, terracotta chair, leather chair, travertine table, walnut console, iron side table, floor lamp, wool rug, linen curtains, landscape art, olive tree, ceramics, books, cushions and woven storage. Add only a few handwritten notes such as “collected over time”, “handmade” and “warm accent”. 04 / Material, Light & Atmosphere: show close-up panels for plaster and sunlight, linen and leather, stone and walnut, and table styling. Add material swatches, a color balance strip and short handwritten notes such as “sun-washed”, “raw texture”, “soft linen” and “warm earth”. Keep the boards modern, cohesive, tactile and highly professional. Use short English labels only, no brand logos, no famous furniture replicas and no long paragraphs.