*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #f5f4ef;--color-bg-dark: #1a1a1a;--color-text: #1a1a1a;--color-text-light: #888;--color-red: #c0392b;--color-red-hover: #a93226;--color-white: #ffffff;--color-border: #ddd;--font-serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "游明朝", "HGS明朝E", Georgia, serif;--font-sans: "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;--max-width: 430px;--header-height: 56px;--footer-height: 48px}html,body{height:100%;background-color:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{background-color:var(--color-bg);min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}.page{flex:1;display:flex;flex-direction:column;max-width:var(--max-width);margin:0 auto;width:100%;min-height:100vh;min-height:100dvh;position:relative;background:var(--color-bg)}.header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;padding-top:calc(12px + env(safe-area-inset-top,0px));height:calc(var(--header-height) + env(safe-area-inset-top,0px));position:sticky;top:0;z-index:100;background:var(--color-bg)}.header__logo{display:inline-flex;align-items:center;text-decoration:none}.header__logo-img{height:28px;width:auto;display:block}.footer{background:var(--color-bg-dark);color:#aaa;font-size:10px;text-align:center;padding:8px 16px;padding-bottom:calc(8px + env(safe-area-inset-bottom,0px));min-height:var(--footer-height);display:flex;flex-direction:column;align-items:center;gap:6px}.footer__brand{color:#fff;font-size:12px;font-family:var(--font-serif);letter-spacing:.15em}.footer__links{display:flex;gap:12px}.footer__links a{color:#aaa;text-decoration:none;font-size:10px}.footer__links a:hover{color:#fff}.btn-primary{display:block;width:100%;max-width:280px;margin:0 auto;padding:14px 32px;background:var(--color-red);color:var(--color-white);font-size:16px;font-family:var(--font-serif);border:none;border-radius:40px;cursor:pointer;letter-spacing:.1em;text-align:center;text-decoration:none;transition:background .15s}.btn-primary:hover{background:var(--color-red-hover)}.btn-secondary{display:block;width:100%;max-width:280px;margin:0 auto;padding:13px 32px;background:transparent;color:var(--color-text);font-size:15px;font-family:var(--font-serif);border:1.5px solid var(--color-text);border-radius:40px;cursor:pointer;letter-spacing:.1em;text-align:center;text-decoration:none;transition:all .15s}.btn-secondary:hover{background:var(--color-text);color:var(--color-white)}.content{flex:1;display:flex;flex-direction:column;padding:0 24px 32px;gap:24px}.loading-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;height:200px;color:var(--color-text-light);font-family:var(--font-serif)}.error-state{padding:24px;color:var(--color-red);font-family:var(--font-serif);text-align:center}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:flex-end;justify-content:center;z-index:200}.modal-content{background:var(--color-white);border-radius:16px 16px 0 0;width:100%;max-width:var(--max-width);padding:32px 24px;display:flex;flex-direction:column;gap:16px}.modal-title{font-family:var(--font-serif);font-size:18px;text-align:center;font-weight:700;color:var(--color-text)}.modal-close{background:none;border:none;cursor:pointer;font-size:24px;color:var(--color-text-light);align-self:flex-end;padding:0;margin-bottom:-8px}.share-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:14px;border:1.5px solid var(--color-border);border-radius:8px;background:transparent;cursor:pointer;font-size:15px;font-family:var(--font-sans);color:var(--color-text);text-decoration:none;transition:background .12s}.share-btn:hover{background:#f0f0f0}.share-btn--copy{color:var(--color-text-light)}.copy-success{color:#27ae60;font-size:13px;text-align:center}